I am at a bit of a loss as to why this would happen. Sounds like the project is possibly "visible" but just off of your screen (the top or left corner of the project set to off screen). Try this:

1. Open project
2. Open debugger
3. In the Watch Window enter: _VFP.ActiveProject
4. You should be able to see settings for project; if so, then the project is open, otherwise you are
not opening the project for some other reason (maybe corruption).
5. Close your project: _VFP.ActiveProject.Close()

Now you should be able to see the properties of the project. If so, then open your resource file:

lcRes=SYS(2005)
USE (lcRes) IN 0 AGAIN

Now do a search for records that have your project name (stem only, lower case) in the 'Name' field. Delete any of these records. Close the table. Now try to reopen the project.