Thanks very much for your reply.
I do not have SDRUNO running when I start DSDPLUS Fastlane and the problem persists.
I have no other dongles connected to the computer, only the RSP1A
Also I have made sure that the FMPP CFG file has the correct serial number of the unit I am running.
I am still at a loss as to why it can’t be detected.
Is it possible i am running SDRUNO with the incorrect API Version.
I have the latest version, 1.33 running on my computer under Windows 7
Again, thanks heaps for taking the time to answer my post,