To what extent is the filename extension important in the Mac/Win environment? I've used .USR as the extension for a runtime solution on both Mac/Win, but what happens if the recipient of my solution already has another runtime from someone else with the same extension?

It's possible under such a case that either their runtime files will attempt to open with your application or that your runtime files will attempt to open with theirs, causing confusion to the user. Most likely, when that happens, the user will receive a message that the files they are attempting to open were not bound for the application they are attempting to launch, and won't let them continue. This is only a problem if the user double-clicks one of the database files rather than the application.

Chuck

It's probably less of a problem if each runtime solution is kept in its own folder.

Fortunately, you can create your own extension when binding your solution (and IMHO, you should). If you use an extension you've never heard of, chances are good that most people who use this solution won't have another program with the same extension.

On windows, I happen to have some application that uses .USR. You're better off making upan extention that is not common.

Thanks for the advice. Does anyone know if there's a listing of known extensions anywhere on the web?

I use the initials of my first, middle and last name for our extension at work.

lionel

Here is one list of extentions.

http://www.file-ext.com/f.html

I saw a better one once on the screen savers but I can't find it now.

Jerry