>I have an MM project that runs okay inside VFP but when I compile it as an .exe I get the 'Alias name is already in use.' message when it dies, which is as soon as I try to run reports. I think this may be an OO problem that I am creating.
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>With objects are the alias names assigned when the program loads instead of when a specific method is actually called? I have many methods that use the same name for temp cursors and files and I wasn't worried about the duplication because the methods erase this data before closing.
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>Do I have to have uniques aliases for my temp file in every method in the project? If so, does anyone have any good ideas about naming conventions for these files? Why doesn't the error fire when I run inside VFP? If I can't get the error to happen in VFP how do I trace?

Don't know about MM specifically, but you could try to trap for Error 24 or add a code checking if alias name is already in use (IF USED("myalias") )