> The only thing I'm worried about now is that 1234567890.22
> gives an invalid floating point operation while 123456789.22
> is ok to enter.

It certainly looks as though you are hitting some sort of
limit/overflow somewhere. Is the error coming from Interbase (and ISC
Error message) or from the application (a normal exception)?

If the problem is coming from Interbase it is time to check out the
table definition including all triggers. If the problem is coming
from the application try compiling with debug DCUs and then check the
callstack when the exception occurs. Hopefully that will give some
idea where the problem is coming from (IBO/VCL/IP).

Geoff Worboys
Telesis Computing