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Bluetooth Discover VI does not work when compiled

I wrote a rather largish LabView program which connects by Bluetooth to instruments we build at our university. Under my LV 7.1 development environment, everything works fine. When I compile the VI, it doesn't work anymore, and the trouble is with the "Bluetooth Discover" VI: it just does nothing! To verify this, I produced the simplest possible test VI, which consists of the Bluetooth Discover VI along with 3 indicators for all outputs of the VI. I wired the timeout input to 10'000ms although this wouldn't be necessary. This dumb VI runs fine under LabView, and reports my instruments as available BT devices - but when built into an application, it does nothing. It should be looking for BT devices in range for 10 seconds, but it terminates instantly without returning any BT devices.
 
Has anybody experienced the same problem? Did you find a way to fix this? (Should I upgrade to 8.0? I'm afraid of doing that because I also build applications for PDA, and just to get the PDA module working properly took me about two days and I don't want to repeat that painful process if not necessary...)
 
best regards
  Martin
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PS: I'm using a Dell Latitude D800 Notebook with Win XP. If I supply a BT address to BT open connection instead of searching for devices in range, then everything works fine.
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After upgrading to LV 8.0, the problem has disappeared 🙂
 
cheers
  Martin
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