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Problem while Opening External Application with LabVIEW using ActiveX

I've got a problem while opening an application (called Canape) with ActiveX. I'm using a sub-vi that opens this application once and closes it immediately after usage. It does this for a few times. Every once in a while it occurs that the Invoke Node with the ActiveX method IApplicationOpen won't respond.
I've checked with probes that the ActiveX refnum is passed to the Node correctly (each time with a new Refnum). The error occurs especially when I'm using this sub-vi much often.
I've checked some timing parameters and in addition to this i secured that every handle has been closed, but now I'm clueless.
 
I would be glad if anybody can help me.
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Hi FSHW,

would it be possible for you to post the code and the application you want to open? Would be great to have a look at it.

Best Regards

Philipp N.

NIG AE

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