In hindsight, could the issue be related to version matching?
VirtualBox and all it's other packages are v6.1.26 while this package has been updated to 6.1.28... so perhaps this package update was made ahead of VirtualBox (in my Manjaro/pamac repositories anyway) being updated, and will be relevant once VirtualBox itself is updated to 6.1.28?
I wasn't sure how to downgrade an AUR package initially, but found a post that helped me to navigate the snapshots, download the three 6.1.26 package files, and run makepkg -scri
... which successfully restored a working extension within Virtualbox!
Pinned Comments
seblu commented on 2019-04-25 17:41 (UTC)
There is no version dependency on this package on purpose! You could read comments back from 2011 to understand why.