I didn't see this discussed before so it may be something I did ...
Running CB 1.3.1 and just added the latest version of CB MySQL Field Type plugin.
I got it working correctly after a bit of fiddling (very useful app!) but just after that, I added CB Juice and when I tried to export to a CSV file, I got the diagnostics in the attached file.
So I'm not sure if these are incompatible or something I did. Any insight would be greatly appreciated.