Often Papercut will crash on your PC, here is how to get it back if it does so- 

1. Go on to your physical hard drive

Do this by right-clicking on the windows icon in the bottom left-hand side of your screen then pressing 'Run' and type "c:" into the prompted box.

and then type "C:" into the prompted box.

Once at this stage press 'OK'

2. Re-running Papercut

After accessing your harddrive go into the 'Cache' folder.

Then go into the newest version of Papercut

Finally, double click on 'pc-client'

Following this Papercut will then be reopened and you will then be able to print.