The software doesn't appear to be available anymore which means you've encountered a bug or a loop within the application. My recommendation is to re-install the software, but before doing that, make sure you have exported all the content you've added to the application. After this operation, re-install the application, run it with Administrator option (right click the executable and choose Run as Administrator). Secondly, it's possible that the software requires an additional amount of space before it can be completed.