My nokia x6 apps folder wont open?

[tWOLVERINEt1]

i downloaded programme call name layar its a kind of mab app when i instslled it on my phone nokia x6 the apps folder dont opem it give black screen and when i flib the mobile it return me to home screen i tried to unistall it but i cant when i open apps manger it tels memory full close some apllications i deleted some files on my mobile its 16 gb now its 13 i dont know what to do please if some one have a soluation tell me i will be aprciated and ty