Multi-part world files for fixed EA worlds

[Zemecon]

In an effort to fix as much of the extreme lagging issues I am now having with The Sims 3, I have been looking into downloading and replacing each of the EA worlds provided with the base game and the expansions that I currently have. I am using Ellacharmed's world fixes and sometimes I get lucky because some of the fixed world files are single files that I can just add the Resources file(s) to with S3PE but most of the time there are multipe world files and I seem to have run into an issue with trying to merge them. I take it you merge the files with S3PE? I hope so.

First of all, here is what I have:

• S3PE from here[www.simlogical.com] sitting in the Sims 3 folder in My Documents,
  
• S3RC from here[www.moreawesomethanyou.com] sitting in the Installed Worlds folder in my Sims 3 folder in My Documents,
  
• the run.bat file from here[drive.google.com] sitting in the Installed Worlds folder in my Sims 3 folder in My Documents.

Now, I've downloaded all of the world files and Resources files for all of the worlds currently in my game and I have relocated all the original world files in a folder outside my Sims 3 folder but within the My Documents folder. Using the world file for Appaloosa Plains - which comes in six parts - as an example, I can extract the Part 1 file without a problem but whenever I try to extract any of the other world file parts I run into this issue:
http://steamcommunity.com/sharedfiles/filedetails/?id=1124938618

The file still gets extracted but I end up with a file that has a 0 B size that I can't do anything with. And all of the subsequent world part files are like this. Do I need to open the first world file part in S3PE and then extract the subsequent parts through S3PE directly or is there some other way to do this?

For reference, here is where I get the world files from:
http://modthesims.info/wiki.php?title=Game_Help:World_Routing_Lags/Downloads#Default_Worlds_Downloads

And this is the guide I am trying to follow, though they do not make this easy at all:
http://modthesims.info/wiki.php?title=Game_Help:World_Routing_Lags/Editwiths3pe

I find it humorously ironic that whoever designed these guides went to great depths on how to do the most basic things like downloading and extracting files but will not tell you how to merge multi-part files in the two guides that are supposed to be dedicated to it:

http://modthesims.info/wiki.php?title=Game_Help:DFDD4_Download_the_File#Content_with_Multi-part_files

http://modthesims.info/wiki.php?title=Game_Help:DFDD5_Extract_from_Archive#Multi-part_files

If anyone can provide any advice and/or assistance with any of this, it would be very much appreciated. Thanks for reading.

EDIT 1 & 2: Fixed two URL links.

EDIT 3: Cleaned up post.

[morgue]

found your post from a google search while having the same issues, and after reading the links provided, the way you merge the files is to rename each RAR file to be [cc name].part1.rar and so on for how many files the cc has. the launcher will at that point be able to merge them itself once you click on the first sims3pack file in the first rar folder (don't extract them from the rar just click on them to open them). i hope this helps anyone else who finds this post.

[Wolftalon121]

Dear god can someone please do like a literally step-by-step-by-step-by-step for this process I genuinely can't wrap my head around any of this. All the .world files in their folders have the same exact name, so when I 'import' them in s3pe it wants me to replace the first file? I don't know if that's what I'm sup[posed to do, because nothing says anything about that part! Do i have to rename the ACTUAL .world file to (for exapmle) Riverviewpart02.world or something? This makes no sense, I've been trying on and off for months to figure this out and I feel like legitimate idiot because all the tutorials just DON'T tell me what to do. This post is the CLOSEST I can find to a relatively coherent answer, and I STILL don't understand fully what I'm supposed to do. Please, someone with at least half a brain, make this process easy enough for the worlds dumbest imbecile to do. I'm so lost and desperate.

[igazor]

The whole thing is explained and illustrated properly right here as the OP linked to years prior:
http://simswiki.info/wiki.php?title=Game%20Help:DFDD4%20Download%20the%20File#Content_with_Multi-part_files

S3PE has nothing to do with this. It's the program you use to open (extract) RAR files that should recognize those with multi-parts when they are in the same directory/folder together and have been renamed correctly with the dot-part1 and dot-part2, etc. stuff as shown in the illustrations. When the multiple parts are so arranged, double-clicking or trying to extract part 1 should automatically find all of the other parts and put them back together for you.

So if you have files named
blah.part1.rar
blah.part2.rar
blah.part3.rar

If the files really were created as three multiparts and not something I just made up, then opening up (extracting) the part1 file in WinRAR, 7-zip, or whatever program you like to use for RAR files, should reassemble the entire thing, thus resulting in a re-assembled folder or file called "blah". If you do not have a program installed that handles RAR files, then none of this will work until you install one because neither Windows nor the macOS handles them on their own.

It should also be noted that many of Ellacharmed's fixed .world files are available on her own site as single-file downloads without the need to put multiparts back together. It was only done that way on MTS because of the file size limitations in place there.
https://ellacharmed.wordpress.com/category/world-fixes-2/

[TermFox7]

NOT all world fixes will fixes your games. I'm just warning you before you replace them. It will good thing if you have original files to revert back. There is issues i found in world fixes at currently time.

Shang Simla (China)
This one only recommended you DO NOT replace this one because Hot Springs lot and Dragon Springs lot terrain very messy up (however tomb still do normally but needed teleport via cheat) and cannot do work activities normally in there lots. Opportunity related Hot Springs tomb will very impossible to completed and interrupt your opportunity list if you replace there lots to normally, so it will not fixes at all and more problems.

Hidden Springs
This world will make horrible lags in your game. Redwood Peak Viewing Area lot (around summit mountain) now impossible to access normally, it can be fixed the lag just make lot type to "No Visitors Allowed" or bulldoze it.

Sunlit Tides
City Hall lot in this world terrain slight messy up (but look normally) and have issues that cannot access City hall and do activities from above level floor normally. This can be fixes just re-build stairs them.