apps/games not opening!!! X(

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http://forum.xda-developers.com – uhh...guys i hav a problem some of my apps aren't opening i always get this error for some apps "UNFORTUNATELY <name of the app> has stopped" WTF????????-.- my phone is rooted its a samsung galaxy s duos runinn on android 4.0.4 i need help i tried formatting but there is no use and no i get this error for many apps/ games i need help ASAP :crying: and can i install slim bean my phone i think flashing a rom will solve the problem please guys i need help badly! THANKS IN ADVANCE :D (HowTos)