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>I can see it in the object browser in vfp on those systems that have the full developer version of VFP. On some it will communicate, and others not. What doesn't make sense is that it communicates fine on some machines with no vfp (only the runtimes) but not on others as well. When I check the registry the entries are there and the location of api dll is included.
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>What could possibly be different between the machines that work and the ones that don't?
Too much to guess correctly... Just imagine the dll trying to be able to log to a specific directory and failing gracelessly if no dir or rigths exist.
Which is the reason I'd check first without COM thrown in.

regards

thomas