Finally, we returned to creating our code base on Windows 7. In any case, I returned to the installer for one of the dependencies that made me sad. The error message from the installer did not help, but it indicated a regase that started from the installer.
I ran the regasm command from the command line and received additional information. It looks like you need administrative authority to complete this task, and our current installers are not escalating the privileges properly.
So, a long story, I got a DLL registration, and the assembly seems to work.
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