Im sure you've done a full reboot.....if not try that.
Also could be clashing with some other cydia app/tweak you have installed.....
Suggestion: go to SBsettings-mobile substrate-addons and turn off one addon at a time to see which one is causing it.
If that doesn't fix it then do a full restore/ jailbreak and set up as a new iPhone when iTunes asks.
I haven't had any problems with photos while jail broken on 5.0.1
Sent from my iPhone using iPF.net