Exclamation [Q] unfortunately the process android.process.acore has stopped error. Help!!

Hey hi i have flashed my s3 with revolutionary s5 v3 rom, but when i restore my contacts from SD card then i am getting an erorr message unfortunately the process android.process.acore has stopped i am getting this error to all the application which is related to sync..
in every 5 mins this error pops up on my screen. please help me out with this error