Relationship gone bad!

[Steverino]

Everything's been fine with a relationship I've created -- one file ("Install.fp5") supplies information to a number of files. Now, when I try to open one of the related files, I get the error message "Install.fp5 is currently in use and could not be opened. The file is single-user, or the host could not be found on the network." Install.fp5 is not single user, and resides on my own computer. When I try to select the file, I get the same message over and over. However, if I open the suite of files in a different order, the relationship works. What could be happening?

Also, I'm experiencing a script slowdown that I feel might be related to a relationship that is somehow lost. Why does this occur?

Hope that somebody could help with this...