>The only robust way that I know of to accomplish it is to define a class to do it for you, and have that class contain an error method to deal with the issue. Something like:

Thats what I'd do, also create a method to open a file exclusively, and if it fails: without showing an error message just return .F. You could also just use a PRG. I have no problem disabling the ON ERROR and reseting it, but I have been called immoral on occasion :-)