I represent the TAUS DQF development team and post this question on behalf of one of the plugin users:
Although the DQF plugin installation passed successfully I have a problem when starting SDL the following error appears:
Cannot load the plug-in defined in "DQF.plugin.xml". The plug-in contains references to SDL assemblies that have not been validated to use the third party plug-ins
SDl Assembly Name Version Validation error
Sdl.ProjectAutomation.Automatic Tasks 3.0.0 SDL assembly reference is not public.
Look at the attached screenshot. My SDL version is:
SDL Trados Studio 2015 Professional - 12.0.4809.0