Legion vs. Phalanx online tournament

[alexanderthegreater]

Im having compatibility issues again!
Strangely I have EBv1.2 vanilla with fixes and never installed anything else, never changed anything. Phalanx300 that tried to join me did modify somthing so that sparta had no walls (hes changing that back now) but since this is the third time i have compatibility issues im getting suspicious.

Im no expert, anyone now anything I might have don wrong?

EDIT:
Ive been checking my software information, and apparantly my computer claims that I have EB installed over RTW1.3 instead of 1.5.
So im gonna uninstall everything then reinstall it all again- over 1.5.
Hopefully that will do it, if it works i may be playing tomorrow.

If not im afraid my participation in this tournament will be in the balance.