I guess you installed Mechlab campaign that included old modified gaming system files that are not compatible to wolfman-x.
Mechlab did modifications like this all the time and without warning to gamers or any compatibility concept in those days.

I guess you installed a campaign that included an old modified corebrain.abl file

Install wolfman-x on top of it again to be sure to access the correct gaming system files. A deletion of the mechlab campaign might not resolve the problem because the gaming system files have been exchanged and you can not tell if and/or which nor recover the right files.

The best installing any MECHLAB campaitn is always to install it into a sandbox folder and look at the files and copy mission related files only(no corebrain.abl, compbas.cvs, buildings.csv or files from the object folder or modified warrior.abls, etc.)

repaircode is a flag that I introduced in my expansion. missions designed before repaircode was introduced still work as long as my corebrain.file is used. My pbrain file needs my corebrain file; if this is exchanged against an older version you get this error message.

Let me know what you found

check out wolfman's missions and wolfman's forum at
http://s2.invisionfree.com/wolfman_x_forum/index.php