I like the new websites! Always nice to check back on this thread every few weeks/months to see that what cool new stuff has been developed.

It looks like the database has been corrupted.The last time the .exe was running does it closed properly (File/Quit) of it has been forced to close?
Also, can you please navigate to C:\Users\username\AppData\Roaming\Qora and delete the data folder?
In case you have changed the location of data folder go where it is stored and delete it.
Then try to launch the app as normally.If it is launched successfully it will make a sync from scratch.
In case you do not want to sync from scratch, you can download the latest data folder from here
http://qora.co.in/?datafolder and replace the existing data folder on your machine while the wallet is not running.
I encountered the same problem a few months ago as well. Sometimes after closing the program, it would refuse to run again. I suspected the blockchain was being corrupted but I didn't know there was a link to a direct blockchain download. At just 180 MB, it's also much smaller than I had expected it to be. Should definitely come in handy. Thanks.