That particular message dialog is strange in a couple of ways. First, it has no program icon (upper left corner), nor a close button (upper right corner). Where is it coming from? Is it a message from Windows, or is it from some third party software? Second, it is asking about replace the file comdlg32.ocx, which is correct, but this itself is strange in a couple of ways. First, it shouldn't even be asking, it should just happen. The software should have the appropriate permissions to do this automatically with no intervention. Second, it is claiming the source of the file is C:\Temp\IDC3.tmp\comdlg32.ocx. Why would it be coming from there? That is not where the TD is installed.
I feel like this is the result of some other type of software you have installed on your PC, most likely anti-virus. Do you have some type of anti-virus software installed? It might be intercepting this Active-X installation. If so, disable it and try running the software again.