Exclamation cant use google play anymore, i need help!

Hello everybody
Yesterday I was trying to install a patched version of the play store, so i just tryng installing it as an update an the only thing i got was "aplicacion not installed" so i decided to uninstall google play store using root and then just installing the patched market, i was still getting the not installed text so next y copied the app no system, gived permissons and everythin, app sudenly crashed
After this i decided to go back to stock GP just by replazing the modded app with the original one, still getting crash text, i intalled and coppied manualy the app, flashed it trough TWRecovery and nothing, app still crash
I dont want to delete anything or flash a brand new system
Does some one have any idea about what to do to make it work again?
Thanks

D800 20c 4.4 rooted
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