Fatal Error "... COM server cannot be marshaled ..."

[Judge]

Hello,

I have a problem with a teststand (V3.1) sequence using on-the-fly report generation. After 13h of testing I get a reproducible error message "... COM server cannot be marshaled ..." (look at the attached screenshot). It doesn't depend on the system time, there is no other task running and I have enough free memory left. As you see in the screenshot, this error occurs during the execution of a ProcessModel sequence when a result is written into the temporary file. Because of the test duration (100h) we want to save the test results directly into a file in case of a computer crash. Using the normal report generation where the results are stored in the memory during the test sequence, we didn't get this failure.

Can someone give me a hint why this failure occures and how to prevent it?

System information:

Windows 2000 SP4

Teststand 3.1 (Deployment version, Labview Operator Interface)

Labview 7.1.1 Runtime Engine

Best regards,

Thomas

[Norbert_B]

Thomas,

since this error does not provide too much information on where the issue occurs, i can only guess. therefore, i have some questions for you which might lead the right direction:
a) Do you loop in your sequence for the whole testingtime?
b) How big is the file at the moment the error occurs? is it a very special size and it is always the same size?
c) Did you check CPU load?
d) Does the error always occur after a certain time (you said 13h after start) or does it differ? if it does, how big is the "window"?

Maybe this can clear up some things,

Norbert B.