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ActiveX Event Callback not working

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I am working with another developer on an ActiveX DLL that I am trying to interface with LabVIEW. The main issue we are running into is he has implemented an event that LabVIEW does not seem to like to work with. I am able to register for the event and create a callback VI where it recognizes the string passed from the DLL to LabVIEW. The only problem is, when I try to run my LabVIEW app, the events do not arrive. I have followed the instructions for events and modeled my code after the examples. There seems to be no reason why it will not work.

Also, we created a simple VB app that can interface to the DLL fine and sees all the events.

Is there some special recipe for ActiveX events that LabVIEW requires? We are so close to getting this to work (all the ActiveX methods work fine) but are stuck on this one bug.

thanks for any help,


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