Any .sci document looks like a default unknown filetype (see attached screenshot) and does not have an SW Icon. Yet .sci is definitely associated with sw.exe and when double-clicked does open version 6. Where is the Icon used for .sci documents in the installation?

A while back I uninstalled and made a fresh installation, but the problem did not go away.

I've done nothing special with my installation(s) of version 6. And my machine is clean and I have no trouble with any other software.