Hi! First time poster here! 
I’m trying to run the VSTPlugin extension in SC and running into some issues when I run VSTPlugin.search;. I’m on an M1 mac.
Taking a step back, here are my steps to have gotten this far.
I first tried to download the mac binary for VSTPlugin-0.54 here.
When I extract that into my Extensions folder, follow the steps to workaround macOS Gatekeeper, and compile my class library, I get this error/warning:
*** ERROR: dlopen '/Users/kevin/Library/Application Support/SuperCollider/Extensions/VSTPlugin/plugins/VSTPlugin.scx' err 'dlopen(/Users/kevin/Library/Application Support/SuperCollider/Extensions/VSTPlugin/plugins/VSTPlugin.scx, 0x0002): tried: '/Users/kevin/Library/Application Support/SuperCollider/Extensions/VSTPlugin/plugins/VSTPlugin.scx' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64')), '/System/Volumes/Preboot/Cryptexes/OS/Users/kevin/Library/Application Support/SuperCollider/Extensions/VSTPlugin/plugins/VSTPlugin.scx' (no such file), '/Users/kevin/Library/Application Support/SuperCollider/Extensions/VSTPlugin/plugins/VSTPlugin.scx' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64'))'
*** ERROR: dlopen '/Users/kevin/Library/Application Support/SuperCollider/Extensions/VSTPlugin/plugins/VSTPlugin_supernova.scx' err 'dlopen(/Users/kevin/Library/Application Support/SuperCollider/Extensions/VSTPlugin/plugins/VSTPlugin_supernova.scx, 0x0002): tried: '/Users/kevin/Library/Application Support/SuperCollider/Extensions/VSTPlugin/plugins/VSTPlugin_supernova.scx' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64')), '/System/Volumes/Preboot/Cryptexes/OS/Users/kevin/Library/Application Support/SuperCollider/Extensions/VSTPlugin/plugins/VSTPlugin_supernova.scx' (no such file), '/Users/kevin/Library/Application Support/SuperCollider/Extensions/VSTPlugin/plugins/VSTPlugin_supernova.scx' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64'))'
So I used sc-plugins-build-scripts from this post to build with arm64. Thank you @madskjeldgaard! I copied the resulting folder into my Extensions folder and that allowed it to compile without errors. However, I noticed that there wasn’t a plugins folder in there.
In any case, whether I compiled the Extension extracted from the binary or that I compiled with the script, I get this error when I run VSTPlugin.search::
FAILURE IN SERVER /cmd failed
ERROR: Failed to read tmp file!
It looked like the same issue as this but without the same resolution.
Would anyone be able to offer any guidance as to the next troubleshooting steps? Thanks!