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VI doesn't return control to sequence, hangs

Using LabVIEW 6.1i and TestStand 2.0f.
Multiple LV Actions in a sequence. All VIs have Sequence Context Activex pointer. Running with sequence editor. First few run through fine. Sequence hangs on one particular VI. The VI completes execution, but doesn't return control to the sequence.

Editing the file at this point shows the run button as white arrow, not the executing arrow. The TestStand sequence editor pane states sequence is executing. Program just hangs at this point and must use debug/abort to stop it.
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Owesley,
How do you know that the VI completes execution? If you step into your VI (put a breakpoint on your LabVIEW step. Step into your VI. Click the Return to Caller button after your VI executes) If the Return to Caller button never appears, it means that there is a problem inside your VI and it is not correctly returning to TestStand.

If you have more questions or this doesn't help, please respond with the results of the above suggestion.

Regards,
Shannon R.
Applications Engineer
National Instruments
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