So I've tested 2.5 with windows 7 64bit and here is what i've found:
- when I want to insert some models from eagle it crashes randomly to desktop (for example: window1, knight) in every game mode
- sidescroller mode loads every map(sometimes even not) and then it crashes(finish

, no way to play )
- r_teleport [tag] in the RPG doesn't work (crash to desktop if I use it)
- village_rpg in the rpg mode blocks and crashes when I'm going through the door to the outside
i've used the windows version and the multiplatform version with the same results.
PS: i've ported TGC on 2.5 (always with RPG mode) and excluding the problems that i've listed it works more stable as R1242
that i've used so far...
My Pc specs:
Ati Radeon 4870 (not overclocked)
Intel Core 2 Duo E8400 (overclocked, but never problems found)
Asus P5KC motherborad
4 gb ram 667 mhz