File Converter not working after uninstall & re-install

[TheOtherUniqueDave]

I uninstalled File Converter on Windows 10 PC (it was working file but I was trying to pin down an annoying Windows issue by removing things) then tired to re-install it. Surprisingly File Converter didn't re-appear in the explorer context menu after re-running the installer.
Additionally, if I try to change the defaults (e.g. disable png to jpg conversion) the settings dialog simply vanishes when I press the Save button (I suspect it's crashing when I hit Save).
Repairing and re-installing haven't made any difference.
(The user has admin rights)
Any ideas?

[Tichau]

Hello,

Can you re-try to disable png to jpg convertion and then send me the more recent diagnostic folder?
You will find the diagnostics folder in c:\Users[UserName]\AppData\Local\FileConverter.

[bazarus]

same thing. File converter didn't appear in context menu windows 7.