Hi @Organist
I’ve been looking into this issue with unknown plugins and believe it’s related to this item from build 4063:
I’ve been able to reproduce the exact thing in the insert plugin window however only when reverting to build 4062 after running 4063 or 41xx - and that’s expected because the plugin database format changed in 4063 in a way that 4062 doesn’t understand.
Can you confirm you’re getting this in 4104 after upgrading from 4062? Seems the problem should only happen when downgrading from 4104 to 4062.
Brad