The espresson On Click you entered as the event property setting produced the following error

I get the error below when a user attempts to open a file on disk using the GetOpenFileName() function:

The espresson On Click you entered as the event property setting produced the following error: License information for this component not found. You do not have an appropriate license to use this functionality in the designed environment.

* The expression may not result in the name of a macro, the name of a user-defined function, or [Event Procedure].

* There may have been an error evaluating the function, event, or macro.

This program works fine on all but one workstation in the office. It even runs fine on the offending workstation until the user attempt to open a file. I have the following declaration in the program:

Private Declare Function GetOpenFileName Lib "comdlg32.dll" Alias "GetOpenFileNameA" (pOpenfilename As OPENFILENAME) As Long

Why would this one computer be blowing up on this? As usual, the error message sounds like it is telling me something, but I can't decipher its meaning.
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MessHallManConnect With a Mentor Commented:
Is this DLL (comdlg32.dll) registered on the workstation that the program is not working on?  Based on the error it appears like the DLL is not registered or is missing on the computer.
jmarkfoleyAuthor Commented:
You're treading new ground for me. I can probably do a search to find out if it is missing, but how do I determine whether it is registered? I thought this dll was standard with Windows or Office or Access.
jmarkfoleyAuthor Commented:
It turned out that it was not comdlg32.dll causing the problem, but use of a 3rd party progress bar dll that I attempted to call just before the comdlg32. I eventually figured that out by commenting out the code to the progress bar and everything else worked file.

The solution was to register this dll as MessHallMan sugested, but jefftwilley's link gave me the actual "how to" command to do that: regsvr32. So, I'll split the points. Running regsvr32 with the path to my rouge dll fixed the problem.
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