Resume Next is not working in this case ...

[Bonnie West]

Unfortunately, "On Error Resume Next" does not work in this case, and THIS app will crash (in my case at least!).
...
Any idea why this error escapes trapping?

You've now discovered that VB's error trapping mechanism is ineffective against errors thrown by the OS (and also by Win32 APIs). Therefore, you should now use VB's error trapping statements judiciously; do not just sprinkle them everywhere. In particular, placing an OERN at the start of every procedure is very bad. You won't receive any useful error alerts (especially while debugging) because you chose to ignore all of them.

Having said that, how far is your code in Sub Timer1_Timer() able to go before it crashes? In order to determine that, you'll have to delete the OERN line and then log your code's activities to a file.

BTW, always keep the following reminder from MSDN in mind:

The clipboard is user-driven. A window should transfer data to or from the clipboard only in response to a command from the user. A window must not use the clipboard to transfer data without the user's knowledge.