T-Mobile Dash (aka HTC Excalibur) Windows Mobile Smartphone 6

SerialMagic Home

T-Mobile Dash running Windows Mobile 6 stops displaying Home screen

Problem: You have been happily using your T-Mobile Dash to scan barcode and RFID tags,
with LaserChamp and SerialMagic then when suddenly you are met with this dialog

The layout you have selected cannot be
loaded. Please select a different layout
using the Home Screen item in Settings.

Windows Mobile 6 Home Screen setting glitch

Windows Mobile 6 Smartphone on Dash apparently gets confused from time to time.
Simply go to Settings, and set it to the same setting you were using then exit settings and it should be fixed.