ValidateLump: old version for lump 7 in map!

Werewolf

Probably not a real Werewolf
aa
Apr 12, 2011
873
309
So I've been trying to compile a map that had been working fine all day. Then out of nowhere, I get the "Map with no textures" error.

First thing I did was check the compile log and I spotted this:
Code:
ValidateLump: old version for lump 7 in map!
What is this? I googled the error, but not really any luck there. I've searched here too and came up with nothing.

Does anyone know what that is and what do I do about it?
 

wareya

L420: High Member
Jun 17, 2012
493
191
Validate your TF2, perhaps one of the compile tools is the wrong version.
 

Werewolf

Probably not a real Werewolf
aa
Apr 12, 2011
873
309
OK I did that and it updated 2 files, and I am compiling fine again.

However it does not really answer the question - just what IS that error and what does it mean really?