I have been creating some IDE design time packages, and found that if you compile the design time package with Assertions turn on, and you use "Assert" in your code, then the IDE reports the actual line number in your source file where the assertion occurred - this is under D5 - have not noticed this before under D3/D4. Quite handy in some cases. Regards, Myles Penlington Software Engineer Advanced Management Systems Ltd www.ams.co.nz/email This message is confidential to the person to whom it is addressed. It is not to be used, copied or distributed by anyone else. If the message has reached you by mistake please contact us immediately and then delete it from your system. Thank you for your co-operation. --------------------------------------------------------------------------- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz