AU plugs *do not work*

The AU plugs cannot be validated by Logic, Live etc. Appears to be an eLicenser bug (latest version installed, 6.11.10.2263), error message:

error: -1701
Application ‘Synsopos’.app could not be started.
Probably the file is corrupted or incompatible, or the file access permissions are set incorrectly.

While the other DAWs can use the VST3s OK, am not able to run Absolute 4 $ investment on Logic Pro. (I seem to recall something similar to this a few years back?)