Thanks for the reply. The author of that thread seemed to have the same problem as me, however his solution did not work for me. By the end of that thread he opened the command prompt and ran "sfc /scannow" and found corrupted files, I ran the same command and got the following message:
"Windows Resource Protection did not find any integrity violations."
At this point I do not believe my O/S files are corrupted and would be unable to re-install Windows 7 on my machine at this time.
A commenter also said to remove the "content" folder from C:\Users\<YourUser>\Documents\Qlik\Sense\Apps and see if it recreates itself. I deleted it, ran Qlik Sense, and it recreated itself.