Problem: ArcPad opens with empty ArcPad window with cancel error window
On some occasions, ArcPad opens with an empty ArcPad error window containing a Cancel symbol.
This is caused by multiple instances of the ArcPadPrefs.apx file saved to the mobile device.
Solution or Workaround
Delete all instances of ArcPadPrefs.apx file found on mobile unit; restart ArcPad application.