I have both Cubase 8 and Cubase 6 installed on my Windows machine, and I confirmed that both of them have this problem with some of my projects.
I have songs that use SampleTank 3 (64 bit), some use a single instance of it, some multiple. Until today the VST was correctly loaded. But suddenly when I open some of the songs I get an error message saying that SampleTank 3 is missing. And when I check plugin information I see that some tracks have plugin information for SampleTank pointing to Cubase application executable instead of “SampleTank 3.dll”. This is pretty weird.
What is also weird is that I get this error for songs that I didn’t modify lately, so there is nothing in the project file that’s changed, it must be some global misconfiguration that applies to all 64 bit versions of Cubase (I have 6 and 8, both fail).
If I open Cubase 6 plugin info, I see reference to 2 SampleTank 3 VST plugins:
SampleTank 3 / IK Multimedia / SampleTank 3.dll / C:\Program Files\VstPlugins / Instrument / 126.96.36.199 / VST 2.4
SampleTank 3 / Steinberg Media Technologies / Cubase6.exe / C:\Program Files\Steinberg\Cubase 6 / Missing Instrument
If I open Cubase 8 it only shows the first (correct) reference but it fails in the same way.
For some songs I don’t get this error, then only correct SampleTank reference is displayed in Plugin info.
For my projects it’s close to catastrophe because tracks with missing plugin info contain custom parameters and if I re-select the plugin all parameters are lost. So there is no way to get the parameters unless I fix the plugin path.
I am completely clueless about how this happened, frantically trying to find the solution.