Keep in mind that user names are set in preferences and it's entirely possible for two computers on your network to have the same user name--this might explain why you appear to have a situation where there seems to be a conflict between a computer and itself.
Thank you, Phil, but there's only two computers on the local network, and both have different names.
Thank you for the post.
There is more than one reason FileMaker Pro will display this particular message. One is that there is an actual conflict, as PhilModJunk notes. Is it possible that there is another user account on that Mac that is still running FileMaker Pro?
Another possibility is related to the opening of the database shared with Instant Web Publishing. Have you been using this feature at all?
It is also possible that User preference files that may have been corrupted. If you have eliminated the other possibilities, you can delete this file and recreate it.
I found this reference in Apple.com/discussions on how to locate your user/Library on Lion:
Once there, open the Preferences folder, and look for the "com.filemaker…plist" files, and drag them to the desktop.
Once you re-launch FileMaker, this file will be recreated. You will find that you will have to reset any preferences you've set in FileMaker again, so check your settings in FileMaker/Preferences prior to using this troubleshooting step.
Please let me know if you need additional clarification.
Thank you, TsTuatara. I tried the suggestion, but it didn't seem to matter. The program quits when I try to go into manage Database relationships (tables/fields).
It sounds as though the issue has changed. Are you able to open "File>Manange>Database..." and FileMaker Pro quits unexpectedly when you click on one of the tabs (tables/fields), or does the quit happen when you attempt to add/change or delete a field?
Is the original License Key message still appearing? At what point?
Where are the files relative to the FileMaker Pro installation?
Whatever you can fill in as to what has changed will help in pinning this down.
The program quits when I try to go into manage Database relationships (tables/fields).
Hmm, that can attempt to open the file of an external table. That might point the finger at a specific hosted file that is part of your system. If you have any external data sources, you may want to take a closer look at those files. Are they hosted on the same server? Are they hosted by Filemaker server or FileMaker Pro?
Apparently, a recent upgrade (from SL to Lion servers) required a domain name change in our school's setup, so now there are two different domains being used to reference external files. It just so happens that Filemaker Server is the same server with new name, but the database files were using the older domain alias. That said, it looks like FS thought my remote requests were coming from two different sources when in reality it was the same source.
RESOLUTION: Resolve all the external references to the ONE domain alias.
Thank you so much!