I would recommend you to try these steps:
Uninstall Disketch, then delete 3 folders named "Disketch" and 1 named "Components" from these locations:
**C:\Users\<username>\AppData\Roaming\NCH Software\Disketch\
**C:\Program Files (x86)\NCH Software\Disketch\
**C:\Program Files (x86)\NCH Software\Components
**C:\ProgramData\NCH Software\Disketch\
**If you can't find any of the folders, just continue.
Once done, restart your computer, reinstall the program and restart one more time.