Share your experience!
Hi,
How do you mean that it's not working, do you receive any error message? Did you also try to clear data for the camera application? You can always try to boot the phone into safe mode to see if same thing happens.
Repair the phone with PCC
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
I agree with uliwooly, try to perform a software repair using PC Companion to see if this can help.