Eb validation says that i have a corrupt install

[bovi]

The changed files for EB here says:
* You have not installed the fixes, and are using the checklist for an installation with fixes. Install the permanent fixes.
OR
* You have installed the fixes but have not downloaded the checklist for an installation with fixes. The validation program will ask you whether you want to download an updated version each time you run.
OR
* You have installed the optional fixes in addition to the permanent ones. These are not reflected in the checklist.

Additionally:
* You have a changed file concerning the vanilla advisor. Probably harmless.
* You have changed the default lighting using the trivial script. Harmless.
* A file with the description for a custom battle seems to be changed. Harmless, except possibly if you want to play that particular battle.

Finally: I don't know how you could have changed map.rwm under mp backup, but most likely you will not be able to play multiplayer as LordBula says. The easiest way to check is to try, if you care to.