PC Lockup problem

[poethomer]

I'm modifying an older app written a few years back in version 6.  I'm seeing occassional lockups with this app when the system is performing a download of the flash code (txt file) to the processor on the UUT.  On random occassions the PC completely locks and the only path to recovery is a total system powerdown and reboot.  The OS is win98se.  The function is to open the text file and then to write the file via a serial connection to the UUT.  Somewhere in that process the entire PC will lockup.  99% of the time the function works and sometimes when it fails there are standard runtime errors thrown or timeouts occur.  My problem is that every once in a while it kills the PC. 

Is there any known issue with CVI version 6 and win98 that demonstrated such a failure.  My searches have yielded no results.

Thanks in advance.

[Patrick_P.]

Hi,

There was a known issue with multithreading, but there were a lot of specific things that had to be true.  Are you running this from the development environment or is this an executable?  If it is an exe, we could try upgrading the run time engine to the newer version of CVI in which this bug was fixed.  If you are seeing this from the development environment, you will need to contact NI to get an evaluation version of CVI 7.0 to try.  I have posted a link to the CVI RTE 7.0 here.  Hope this helps!