We are using Magic Software as a front end to Btrieve.  We have an application that has been working fine for years but on one site we are getting lock messages on files when a second or third user is on the system.  Nothng has changed in the software.  Magic runs their own locks and we are seeing a file (~PVSW~.loc) in the data directory which we do not usually see.  So perhaps a setting in Btrieve has changed that is causing Pervaive to lock a file and then cause Magic to not be able to control the locks.  Any suggestions would be greatly appreciated.

The ~PVSW~.LOC is a locator file created by a Workgroup Engine.  Open the file and you'll see the name of the machine that is running the engine that is being used to access the files.  If you don't usually see this file, then you probably have a server engine that's used for accessing the Btrieve file.  The workgroup engine is probably interfering with the server engine in this case. 

Once you figure out what machine's workgroup engine is interfering, you'll need to figure out why that machine is using the WGE instead of the requester to talk to the server engine.