Hello,
You may try to do a clean install.
You may try the steps below:
Uninstall PhotoStage, then delete 3 folders named "PhotoStage" and 1 named "Components" from these locations:
**C:\Users\<username>\AppData\Roaming\NCH Software\PhotoStage\
**C:\Program Files (x86)\NCH Software\PhotoStage\
**C:\Program Files (x86)\NCH Software\Components
**C:\ProgramData\NCH Software\PhotoStage\
**If you can't find any of the folders, just continue.
After that, restart your computer and reinstall the program using this link: https://www.nchsoftware.com/slideshow/pstagesetup.exe
Once done, restart your system one more time.
If you will have the same issue, I would recommend reaching out to the NCH Software technical support team. You may reach out to them here: https://www.nch.com.au/support/index.html