About vertex file errors

[wiimeiser]

Doing a quick search I've found multiple threads with no responses regarding strings such as Error Vertex File w_model_deagle.mdl checksum xxxxxxxxx should be xxxxxxxxx

To wit: AFAIK It's to do with two different models having the same name: Source does not do model replacements well, it seems. The Matter Manipulator, well:
http://steamcommunity.com/sharedfiles/filedetails/?id=737215594
I honestly have no idea why that's not causing any errors. There must be something in the game code somewhere. Maybe Gmod does something on mounting.

For me, this happens if maps such as this:
http://steamcommunity.com/sharedfiles/filedetails/?id=788972940
happen to contain files with the same filename as a mounted file. Since another addon conflicted with the vanilla doors, it doesn't have to be a conflict with a file mounted from a game (though that's where I noticed it usually happens). Someone will need to do some experimenting to find out exactly what triggers it...