Ich hatte in der Vergangenheit ein ähnliches Problem und SmartSound hat mir folgende Nachricht gesendet (bitte Google Translate verwenden, um auf Deutsch zu lesen):
First, close all programs, then use the Control Panel to uninstall the "SmartSound Sonicfire Pro 6" entry. If you have any other Sonicfire Pro entries, go ahead and uninstall them as well. Be sure to leave the "SmartSound Common Data" entry intact, as that is your music library. Once they have been removed, download the latest installer from the page below:
http://www.smartsound.com/sonicfire/downloads/
Once the file has downloaded, right click on it and choose "Run as administrator" to make sure it installs with the proper permission settings. Next, launch Sonicfire Pro and sign into your account to unlock the software and the plugin. Then launch Studio again and see if it now works.
If you still have the same problem, try closing Studio and then relaunching it by right clicking the icon and choosing "Run as administrator" and see if it makes any difference. If so, you may need to reinstall Studio in the same manner, using the "Run as administrator" option to ensure both programs have the correct permission settings to communicate with each other.