I just received the Vienna Imperial yesterday, and I'm having a small problem with the Mac version of both the standalone app and the plugin: The "Load" button next to the Factory Presets button does not work. I can access the very nice Factory Presets, and I can tweak settings, and (it appears) I can even Save them (although I can't locate the saved file anywhere), but trying to re-load them does nothing. Clicking "Load" results in... Nothing. The Delete button doesn't do anything, either. Only Factory Presets and Save do anything at all.
I'm running the latest version of Vienna Imperial -- v. 1.1.631. I've re-installed, restarted, and nothing seems to help. I noticed that the Application Support folder contains nothing related to Vienna Imperial (although it does have Ensemble Pro and Instruments Pro folders). Is that the problem? Are those buttons trying to access a folder that doesn't exist?