Tim, I can confirm that it is SkyDemon Inflight Version 1.1, downloaded from your site.
Confirmed again this afternoon - error 3 minutes after Satellite lock.
The full error text is below (hope not too many mistakes - it is a hard one to copy manually)
SkyDemon.exe
Error
An unexpected error has occurred in SkyDemon.exe
Select Quit and then restart this program, or select Details for more information.
An error message cannot be displayed because an optional resource assembly containing it cannot be found.
Click "Details"
Error
SkyDemon.exe
OverflowException
An error message cannot be displayed because an optional resource containing it cannot be found.
at System.convert.ToInt32()
at System.convert.ToInt32()
at Divelements.Aviation.x48531d913ebdc8ab.x3a117dc4e99db559()
at Divelements.Aviation.x48531d913ebdc8ab.x3a117dc4e99db559()
at Divelements.Aviation.Mapping.x2f1599f2099aaa05.x41827d71b368ba0c()
at Divelements.Aviation.Mapping.x2f1599f2099aaa05.xe406325e56f74b46()
at Divelements.Aviation.Mapping.x2f1599f2099aaa05.Paint()
at Divelements.Aviation.x08534a347ae9fc7.OnPaint()
at Systems.Windows.Forms.Control.WnProc()
at Systems.Windows.Forms.Control._InternalWnProc()
at Microsoft.AGL.Forms.EVL.EnterMainLoop()
at Systems.Windows.Forms.Application.Run()
at Divelements.Aviation.x867eb3246b182488.xc4478091322395()"
Click "Quit".
"Fatal Application Error
Application SkyDemon.exe has performed an illegal operation and will be shut down.
If the problem persists, contact the program vendor.
Program: SkyDemon.exe
Exception: 0xC0000005
Address:02A9B2D8
Click "OK" & prog exits.
Regards,
Max
P.S. The spellchecker seemed totally confused by this note.