I have a slightly different problem to Max's, but seems to be caused by the same file. When I try to run an app from the Delphi IDE I get the error message "Debugger kernel BORDBK40.dll is missing or invalid". I have checked and this file is in the Borland Shared\Debugger directory. I thought it perhaps had been corrupted so copied it off my original Delphi install disk and replaced it - still the same error message. After reading some of the replies to Max's problem, I tried closing the IDE with no project open as suggested, but to no avail. Also altered the event log options (even though they haven't been altered before) - still no good. Is the problem a corrupt registry setting? If so where do I find it, and how do I fix it? TIA Regards, Michael White Software Developer QTECH Data Systems Ltd --------------------------------------------------------------------------- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz