>Should the Kbizobj contain an error handler rather than just accepting the default from containerx?

In the latest version, kBizObj does do its own Error Handling. Take a look at the HandleError() ErrorFieldRule() ErrorRecordRule() and other Error...() methods in the KBizObj parent class (Common30\Lids\kbizness.vcx - not abizness.vcx where you store sublclasses that probably appear empty since they inherit from kBizObj).

Hope that helps...