+x+xReinstalling SkyDemon does not seem to fix the issue, I'm still unable to enter altitudes / times / select aircraft on my PC!

You could try to reset your configuration by deleting the settings.xml.
- Open the windows file explorer.
- In the navigation bar paste the following path: "%APPDATA%\Divelements Limited\SkyDemon Plan\"
- delete or rename the file "settings.xml"
This should reset your window configuration.
Thanks this worked a treat

Looking into the issue further, I discovered it was simply one line in the settings which was causing the issue, and so copying over just that line into my old settings fixed the issue without me having to go through all my settings again, the line in question is line 6 in settings.xml ... however when comparing the two lines they look exactly the same, maybe a bug somewhere?
Oh well, its all working again now
thanks!Ash