Thanks for the reply guys.

I'm trapping the error by doing somthing like :

ON ERROR oError.ErrorHandler(error(),sys(16),lineno())

In the oError.ErrorHandler method I have the following parameters to accept the values from the on error call.

LPARAMETERS tnError, tcMethod, tnLine

tnError is 0

if I replace the error handler and place it in a standard prg, so my on error handler looks like :

ON ERROR errhand(ERROR(),SYS(16),LINENO())

When the error occurs and errhand.prg is run then tnError is still 0.

Weird eh?