Welcome Thomas [:)],
sorry to hear about these troubles! I´m not a FL Studio user, but there should be a way to check the list of installed VST plug-ins....
Which OS are you working on, and what are the specs of your machine?
I assume that you are working with the latest available VSL Software (best to start with Vienna Instruments / Vienna Ensemble), right?
Thanks for the additional infos!
Best,
Paul
Paul Kopf Product Manager VSL