https://bugs.winehq.org/show_bug.cgi?id=46466
--- Comment #3 from Reinhold reinhold.hoffmann@hotmail.com --- Thx for the immediate response.
Please find a demo package in the zip file. At first please read the file "Readme_Demo_for_COMServer_bug_46466.txt"
VERY IMPORTANT The COMServer.exe modifies the Registry as described in "Registry_Values_of_COMServer.txt" which can be removed executing the command as described in section 5. of the Readme file.
I believe that the bug is that an 64-app cannot access 32-bit instances calling CreateInstance
Could be that it is really not a big deal to fix that because the complete implementation of CoInitialize, CreateInstance, CoUninitialize works fine but just for one side (either 32-bit or 64-bit) but interworkng between these two worlds fails.