I tried installing the Osirus 1.35 clap plugin in Bitwig, but got the error com.bitwig.flt.library.metadata.reader.exception.CouldNotReadMetadataException: could not read metadata. Apparently this error can be caused by the com.apple.quarantine xattr flag (which I cleared, as instructed), but that didn't solve the issue. The same error can also be caused when the path doesn't match some expected value. From this page, I saw the suggestion to rename the plugin from Osirus.clap to Osirus2.clap, and sure enough, Bitwig now loads the plugin fine.
I tried installing the Osirus 1.35 clap plugin in Bitwig, but got the error
com.bitwig.flt.library.metadata.reader.exception.CouldNotReadMetadataException: could not read metadata. Apparently this error can be caused by the com.apple.quarantine xattr flag (which I cleared, as instructed), but that didn't solve the issue. The same error can also be caused when the path doesn't match some expected value. From this page, I saw the suggestion to rename the plugin fromOsirus.claptoOsirus2.clap, and sure enough, Bitwig now loads the plugin fine.