I had a terrible time upgrading to 3677 . Once installed and I tried to open it, the dialog box said I had invalid serial number and would have to reinstall again. A second install resulted in the same result. I then tried a repair which completed successfully and the reboot prompt appeared. After reboot the result was the same. I had to completely uninstall, reinstall with version 8 & 9 keys and now it has started working. The scheduled tasks were there but they had to be modified. I hope acronis does something about this.