An issue has been raised in the comments of the mod. The communication exchange so far is as follows (oldest at the top):

GreenMan 23 Jan @ 3:36am
Doesn't seem to work ATM, sorry. I used the cheat commands to spawn in the bow and tranq metal arrows, the bow doesn't load the arrows (0\0 displayed, though it does say it's loaded with them).I then tried removing my other bows and arrows and making it from BP's. Still doesn't work.

SleepyLloydy [author] 23 Jan @ 5:53am
@GreenMan: I'll start hunting this problem down. Is there any chance you can give more information? Were you testing on a dedicated server or single player? Was this the only mod loaded or were you loading it with other mods? Did the icons show up for the arrows when they were spawned in? Any extra info you could share would be appreciated!

GreenMan 23 Jan @ 2:58pm
I sure can. Was playing single player, with quite a few other mods on but none that affect the compound bow or arrows at all. This mod was last in the load order. The icons for the arrows show up fine, I could see the bow was loaded with tranq metal arrows but the ammo count was 0/0, despite having 50 arrows.

SleepyLloydy [author] 15 hours ago
@GreenMan: I've released a new version with some changes that might fix the issue you were having. Could you please test it again sometime and let me know how you go? I've updated the description with the cheat commands for the new arrow too :)

Caellion 6 hours ago
Regarding issue @GreenMan has, I've just installed the mod on my dedicated server and have exact same issue, additionally engrams for them dont show up in engram point menu

I've been able to recreate this issue on a dedicated server. It seems that when the arrows are spawned in from the engram they do *not* load properly onto the Compound Bow. The option to drag them onto the bow either doesn't appear, or it appears initially and after dragging the new arrows onto the bow the option disappears.

You can though learn the engrams, spawn in the necessary materials, craft them in your inventory and then use them without issue. I think this must be an issue in how the blueprint engram is being referenced by the cheat command. I'll need to do more research on this.

But in the mean time, here are cheat codes to spawn in the raw materials for each arrow:

1) Spawn in a single compound bow
admincheat giveitemnum 376 1 0 0

2) Spawn in a stack of metal arrows - you can spawn in the arrows in stacks of fifty. Run this command as many times as you like until you have sufficient arrows
admincheat giveitemnum 377 50 0 0

3) Spawn in the required materials - the first line is to spawn in narcotics for the Tranq Metal Arrow, the second line is to spawn in rare mushrooms for the Drain Metal Arrow. As with the previous command, repeat this as many times as you like until you have sufficient materials
admincheat giveitemnum 123 100 0 0
admincheat giveitemnum 251 100 0 0

4) Learn the engrams - they require level 70 and can be learnt from the ARK engrams menu in the player inventory

5) Craft the arrows - in the player craftables menu (default key: v) you will see the option to make the metal arrow varients that you have learnt. Craft the desired amount as you would for other ARK craftables

6) Equip them to your compound bow - drag your compound bow from your inventory to a number in your hot bar (it can be any number). Then drag the desired arrow from your inventory onto the compound bow in your hot bar.

7) Use the new arrows - press the hot bar key that corresponds to your compound bow with the new arrows. Enjoy!

Could people who have had this issue up until now (@GreenMan and @Caellion) please give this a go and let me know if this gives better results?

@Caellion I would also like to know a little bit more about the "additionally engrams for them dont show up in engram point menu" part. Do you have any other mods installed? Are you specifying the mod in the command line or the ini file? If the engrams don't show at all it sounds like the mod might not be being loaded at all, but this can't be the case if you were still able to spawn in the faulty arrows like @GreenMan describes. I'm wondering if it is conflicting with another mod on your server - could you try moving my modid up the launch order and seeing if that makes any difference next time you restart?

Hope this makes sense - please let me know if it doesn't. I look forward to hearing whether this helps things or not!

Bug reported 25/01/2016 by @Kiety:

When crafting arrows in the inventory, when you already have a Tranq Metal Arrow in your inventory it takes the resources, but the number of Tranq Metal Arrows does not increase.

I've been able to reproduce this bug. The crafting menu is taking the metal arrows it finds highest in the players inventory (closest in order to the specimen implant) but is also counting Tranq Metal Arrows and Drain Metal Arrows as consumables. If the Tranq Metal Arrow or Drain Metal Arrow is higher in your inventory then it seems to consume that in making the recipe. In the case of making Tranq Metal Arrows when you already have Tranq Metal Arrows high in the player inventory this means that narcotics will be consumed, but no extra Tranq Metal Arrows will appear in the inventory.

Until a fix is released the solution is to move the Metal Arrows in your inventory closer to the Specimen Implant in order.

Idea: Maybe extra engrams could be added (0 engram cost) that allow you to recraft arrows using the Compound Bow Plus arrows as acceptable substitues for the Metal Arrow (a bit like chitin/keratin work for some engrams). I still think the default behaviour should be consuming strictly Metal Arrows in crafting the Compound Bow Plus arrows.

Originally posted by SleepyLloydy:

@Caellion I would also like to know a little bit more about the "additionally engrams for them dont show up in engram point menu" part. Do you have any other mods installed? Are you specifying the mod in the command line or the ini file? If the engrams don't show at all it sounds like the mod might not be being loaded at all, but this can't be the case if you were still able to spawn in the faulty arrows like @GreenMan describes. I'm wondering if it is conflicting with another mod on your server - could you try moving my modid up the launch order and seeing if that makes any difference next time you restart?

Hope this makes sense - please let me know if it doesn't. I look forward to hearing whether this helps things or not!

I just meant that for me I am unable to see engrams in ARK engrams menu. It may be the case that it conflicts, for now it is second mod that gets loaded behind healthbar mod, and after it there are multi weapon attachments, tavans' trough and industrial grinder (in this order).

The mod order is specified in the commandline. I'll be trying to move it to first and last positions later today.

For me it also seemed that the mod wasn't loading at first, but I tried to spawn in BP's and craft the arrows, and I was able to spawn in BP's but not use arrows crafted that way.

Hi @Caellion - a comment left by @jslay on the mod makes me think that the error with the arrows being unusable is because I provided incorrect cheat codes. I have just updated the mod page with corrected cheat codes:
http://steamcommunity.com/sharedfiles/filedetails/?id=604581285

My error was to specify the mod file using the mod ID in the path, rather than the mod name. Please try this cheat to spawn 50 of the Tranq Metal Arrows and let me know if it attaches properly to your compound bow, or not. The cheat code is:

cheat giveitem "Blueprint'/Game/Mods/CompoundBowPlus/MetalArrowTranq/PrimalItemAmmo_CompoundBowArrowTranq.PrimalItemAmmo_CompoundBowArrowTranq'" 50 0 false

Originally posted by SleepyLloydy:

Hi @Caellion - a comment left by @jslay on the mod makes me think that the error with the arrows being unusable is because I provided incorrect cheat codes. I have just updated the mod page with corrected cheat codes:
http://steamcommunity.com/sharedfiles/filedetails/?id=604581285

My error was to specify the mod file using the mod ID in the path, rather than the mod name. Please try this cheat to spawn 50 of the Tranq Metal Arrows and let me know if it attaches properly to your compound bow, or not. The cheat code is:

cheat giveitem "Blueprint'/Game/Mods/CompoundBowPlus/MetalArrowTranq/PrimalItemAmmo_CompoundBowArrowTranq.PrimalItemAmmo_CompoundBowArrowTranq'" 50 0 false

I've moved the mod to the end of load order and spawned arrows in with the non-id cheat codes and they seem to work, same for bp's spawned in for them. It seems I have some engram overrides in config which I didn't see earlier, that may have prevented your engrams from appearing.

UPDATE: No matter where I put the mod in the load order, engrams are not learnable in ark menu. I have removed overrides mentioned before. What is more on each server restart arrows from this mod and their blueprints disappear.

I have the same issue as Caellion. I can cheat/spawn in all the items, the tranq arrows, ect, but when I go to the Ark 'Learn Engram' screen, the tranq arrows are not there. I've looked up and down, incase maybe its spelled wrong when I search for 'tranq' or 'arrow' and i've tried moving the mod up and down in the loader (Singleplayer)

Same occurs to me on my non decidated server, no engrams to learn

Also having the issue on Dedicated server, engrams not showing up. load order is ActiveMods=574069627,598349626,503911420,556180087,536214294,510590313,531396658,531713045,525507438,604784090,604581285 defined in GameUserSettings.ini instead of command line. I'll try spawning in the blueprints with the new code and see if that will work.

http://steamcommunity.com/sharedfiles/filedetails/?id=603182437 here's the collection of all the mods i'm using on my server if that will help you debug the issue.

edit: just tested the arrows crafted from the blueprints and they work like a charm, haven't tried reseting the server yet though to see it they get wiped. should be fine for now though.

@Caellion: Thanks for getting back to me. I'm glad that the updated cheat command has made the arrows usable.

@Caellion, @Rokku_Ryu, @Spowan, @TyoAtrosa: I'm hearing you on both:
1) Engrams for the arrows not showing in the Ark Engrams Menu; and
2) Arrows disappearing from inventory after server restarts.

Give me a bit of time - but those two bugs are my current focus before any new arrows are added. I will let you know when I have made progress and when there is an update or a solution to that problem.

Originally posted by SleepyLloydy:

@Caellion: Thanks for getting back to me. I'm glad that the updated cheat command has made the arrows usable.

@Caellion, @Rokku_Ryu, @Spowan, @TyoAtrosa: I'm hearing you on both:
1) Engrams for the arrows not showing in the Ark Engrams Menu; and
2) Arrows disappearing from inventory after server restarts.

Give me a bit of time - but those two bugs are my current focus before any new arrows are added. I will let you know when I have made progress and when there is an update or a solution to that problem.

No worries, take your time and when you fix it, let us know what was the issue (this may come in handy for other modders later). I personally think it's somehow related to how the mod loads, seemingly it doesn't load assets (engrams bp's, etc.) at server start and gets loaded on command (if it's even possible in ue4, coming from Skyrim modding community, and I had such a kind of issue with some mods).

Originally posted by SleepyLloydy:

@Caellion: Thanks for getting back to me. I'm glad that the updated cheat command has made the arrows usable.

@Caellion, @Rokku_Ryu, @Spowan, @TyoAtrosa: I'm hearing you on both:
1) Engrams for the arrows not showing in the Ark Engrams Menu; and
2) Arrows disappearing from inventory after server restarts.

Give me a bit of time - but those two bugs are my current focus before any new arrows are added. I will let you know when I have made progress and when there is an update or a solution to that problem.

Good to know you're on it, thats all we can ask of you. I love the concept of the mod. I love bow and arrow rather than assault rifles..

Do you think once the stun rod is added in a future patch, you'd be able to make a taser arrow?

@Rokku_Ryu: I am certainely considering a taser arrow. I just need to get clear in my mind how to adjust the player stats appropriately to make it look realistic. Losing consciousness initially would be easy - but people seem to awaken very quickly once the tazing stops. I'm not sure how that would be easily achieved and whether applying torpor and stimulant effects at the moment of the arrows impact will give the desired effect... I'll keep thinking on it! If you have more arrow ideas please check out the arrow ideas discussion thread so we can keep the ideas in one place :)

re: arrows disappearing from inventory after server restart
There has been mention in recent patch notes (v232.6) of a similar problem effecting the beer barrels where beer would disappear after the server restart:
http://steamcommunity.com/app/346110/discussions/0/594820656447032287/
I'm wondering if those experiencing the disappearing arrows issue are still noticing it once they have upgraded to v232.6 or higher. In the meantime I will keep hunting it at my end :)

hey this is our server mod conf

ActiveMods=581683725,590046776,572688598,598349626,533175507,569786012,606562883,601055156,555866941,604581285,558651608,534838287,510590313,512609530

hope it helps

v0.3 of Compound Bow Plus will be released in the next hour. I've had feedback from other mod makers that the issue with the engrams not showing in the engram menu *might* be solved by re-verifying my ARK Dev Kit files before cooking the mod. I've done this but I won't know if it helps until you try it as I haven't been able to re-create the error in my development environment.

Thanks to everyone who has supplied their list of mods so far. The only mods in common are the Metal with Glass Mod and the Compound Bow Plus Mod. I've been able to run this mod alongside the Metal with Glass Mod (it was running alongside it during the YouTube video I recorded) so it isn't a simple compatibility issue with the Metal with Glass Mod. Please keep the mod list coming though if your server is having this issue.

In testing I have found that if I don't specify the mod upon map load then a) the metal arrow engrams don't show up; b) arrows in my inventory from prior map loads will disappear; c) I can still spawn the arrows in with the cheat codes. Given that experience I am pretty sure that the issue is with the mod not loading upon map load. If you are still having the issue with the engrams not showing could you please let me know if you specify the mod in the ini file or in the command line? I think specifying the mod in the command line might fix this problem but I haven't tested that yet.

Bug in Alpha v0.3: When a dinosaur has existing weight (like a saddle, inventory items and/or a player) and the harpoon adds to their weight the auto-drain effect will reduce their weight below the value of their original weight. I will need to find a better way to do the weight change calculation.