Lee
I did say How this happened in the original Post.
I was curious about why at least 7 files always had to be replaced in the verify so I followed the steps in the original post.
Basically verified the files in steam
ran the editor and closed it with out doing anything
and ran the verify again.
both verifications showed 7 files failed to verify.
Having found the 5 of the files that were failing the verify were in the levelbank/testmap directory( a directory I thought contained temporary files the were recreated whenever you ran GG).
I decide to test my theory that the files would be automatically recreated by deleting them and running the editor.
That was when I got the error. I expected the system to rebuild the files as it does in a standalone or at very least say "these files are corrupt or missing"
The error message is less concerning than the fact that as things stands a verification with out errors will only happen if you have not used the software!!
I though I was clear in explaining how I got the message in the first post. I am sorry that I was not and hope that I have now clarified things.
R.
ps
i did forget to mention that gg hangs on the error message and you have to kill both bits in task manager.
CPU:i7-4720HQ Mem: 16G
Graphic: GTX 980M 8G and intel HD4600
OS: Windows10