Hi - I am still using 5.5.1 for the PC using Windows XP. (I realize that some decade I should get a Mac but I have some large projects that are on this platform and generally it does everything I need.) I started using Philharmonik as a VST plug-in and it was working well. Then I started getting error messages when I loaded files that used this VST plug-in that the plugin was not found. I have reinstalled the plug-in software but it didn't solve the problem. Does anyone have any suggestions?