@d-healey Hey David, yeah I did. But I already managed it to compile the plugin, just by changing the path in the juce_VST_Wrapper.cpp to an absolute path on my system.
Not an elegant solution, but worked for me. But nevertheless, I'd love to know, why it won't compile otherwise.
I tried to point to the VST3 SDK folder as well as the vst2.x folder inside it, none of them worked.
I also renamed the VST3 SDK folder, to VST3_SDK , because I thought, it might got something to do with the empty space in the directory name... didn't work either.