Problem with android.process.acore on SGS2. Anyone else?

[mystvearn]

I keep getting this android.process.acore when I try to go into my contacts. I have no idea why it happens but it just happens. I tried flashing my phone, the problem is still there, and I think its related to apps. I did try to clear the contact storage data but my contacts are wiped out in the process. It works, but contacts are wiped out. Any ideas?

[FJ]

You could backup the contacts with MyPhoneExplorer before resetting the contact-store - or do you have the problem even then ?

[mystvearn]

I did a backup, prior to the problem but the problem keeps coming up from time to time.

There was no problems in making the backup.