This appears to be a MySQL 5.0 issue. Are you using version 5.0?
Apparently MySQL changed the behaviour of their BIT fields in version 5.0 which causes a problem in Aware IM (which has been tested with MySQL version 4.1).
We'll be preparing a patch that will fix a problem and will let you know when it is available.
In the meantime can you work with MySQL 4.1 or Derby?