I upgraded from CB 1.1 on my J1.0.15 site without issues. Everything was flying along until I tried to change values on fields and tabs. I was also unable to administer users from the back end.

I was unable to change any of the values. I un-installed again, and re-installed. Still no joy.

Went BACK to 1.1, and everything worked fine....so, being stubborn. I reinstalled 1.2 RC3.

I was still unable to change any values, and administer users. On a whim, I defaulted back to the standard Joomla Admin template...and now everything works just fine.

Not sure if it's just my installation, or maybe a bug?