Just updated SD3 to v3.3.1 using Product Manager. All worked fine. The 3.3.1 VST plugin is there and is accessible in Nuendo, but the standalone version no longer works. When I run the shortcut this message appears:

Note1: EzBass and EzKeys standalone version are there and working.
Note2: yesterday I updated the PC from Windows-10 to Windows-11 and then immediately rolled back to Windows-1o. Could this have caused the problem. Everything else on the PC appears to be working fine.
How do I get it working again please?
EZBass v1.1.8
SD3 v3.3.6
EZKeys v2.05
Windows-10Pro (ex Windows-11Pro user)
Nuendo-12.0.70
Roland TD-20X
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The post has been modified 2 times, last modified 3 years, 9 months ago by Asa Palmer.