With my custom brains
(http://www.zabaware.com/forum/uploaded/markofkane/200913155110_eroor.jpg)
I usualy find that a plugin that is not working correctly with the new brain is causing the errors.
I get that error now with the Learn From Clipboard plug-in.
This is most likely the loneliness plug-in (or maybe another plug-in). You need to set up the options for time and frustration to initialize the tables it needs, it most likely is not set to anything. This is pre-initialized in the new 6.2 brain but you must do it yourself to any old custom brain.