If the activation window shown above doesn’t appear during the launch of your DAW, please try to create an instrument track with your new plug-in inside your DAW. If you can’t find your new plug-in in the plug-in list, head to the preferences of your DAW and rescan all your plug-ins manually.
For Windows users: Please be aware that the VST plug-in’s *.dll will always be placed in C:\Program Files\Vstplugins. You want to make sure that this folder is part of the folders that are scanned by your DAW. Alternatively, use Windows Explorer to move ArcheViolin.dll, ArcheViola.dll and/or ArcheCello.dll to the folder that you normally use for 64-bit VST2 plug-ins.
If you have canceled the activation routine by clicking on QUIT in the activation window, it could lead to your plug-in being blacklisted by your DAW. You will have to FORCE SCAN your plug-in to be able to access the activation window once again.
How to FORCE SCAN in some popular DAWs: