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>>Expanding on my previous reply: would it be possilbe to rename ComCtl and install the renamed component?. I use only the TreeView control because I can not avoid it but it's given me lots of problems over the years. If I could be sure that the ocx is always the same regardless of versions and software installed I would be much happier.
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>Renaming the file won't help; the ProgID of the ActiveX control is the issue, no matter where you put the file or what you name it, the ProgID reference is the issue.

One can always hope. I thought it was too easy. How to deal with ocx versions? It's happened before, that something has overwritten one of the components in one app bringing it to a halt.