serial communication problem under WIN 2000

[sylvester]

I have a program in Labview 6.0 that communicates with a serial device only by sending CTRL R and CTRL E. I also have WIN 98 and WIN 2000 installed on the same computer. The program works fine under WIN 98. Under WIN 2000, it hangs (sometimes, not always). If I highlight execution, I can see, that it hangs at serial port write.vi. Highlighting the execution in that VI, I see the data flow through the whole structure, but then the VI does not terminate (and no error message). What might be the problem?

[Dennis_Knutson]

I'm guessing that you're using the old, obsolete serial functions and not VISA Raad and Write. I've heard of problems with that old stuff not working with newer OS's. VISA is really much nicer.

And, if you're using 6.0, you should look into updating. A free upgrade to 6.0.2 (opr maybe it was 6.0.1) is available. Verion 6.0 was pretty buggy.