"Hi, I also got the famous \"grey market\" error. I read all the thread about this problem ([URL=\"https:\/\/gearspace.com\/board\/cubase-7-nuendo-6\/796451-got-cubase-7-us-version-need-help.html?highlight=us+version\"]here[\/URL]) and yet I didn't understand - Can i upgrade to future versions which are NOT free (for example: cubase 8)?"