| you haven't installed any xmb mods i.e. new icons, battery icon etc. as that will stop games working p.s. is it just tekken or do no games work.
also make sure the games are in "game" folder. plus you could try the pops-loader to load a different pops version.
__________________ Black PSP 2.71 SE-C EU 
Black PSP 3.71M33-2 EU
Black Slim PSP 3.71M33-2
Nintendo DS + M3dssimply
Nintendo Wii + Wiikey
Xbox Self Chipped, Xbox 360 NME Self Chipped
Ps3
1GB Sandisk MS Duo, 2GB Sony MS Duo, 4GB MS Pro duo, 4GB Datel Harddrive
Grand Theft Auto LCS
Grand Theft Auto VCS
3600mAh External Battery
+Plenty of Homebrew |