Program using activex works only one time

[rugebiker]

Sure, I uploaded both. Thanks for the help.

[Charles_CLA]

Which .vb file does the code in question reside in? I don't have VB.Net installed or I'd search the entire project...

[rugebiker]

I don't know exactly where that part of the code is, but my coworker told me this: 

The port open/close is handled internally by the DLL.  By releasing the object (in VB this is done by setting the object to nothing). In VB all references to the object are removed by setting the object = nothing.

[TailOfGon]

Did you try running the VB code which only contains open and close? Here we need to compare 2 equivalent codes.