Version 1.2 is now available here:
Module:Pax Viking - Vassal
The solitaire mode game setup has been updated to reflect the 2nd Printing rules. It excludes the tiles not considered suitable for solo play. It also discards the first six saga tiles to form an initial discard pile.
The program doesn’t stop you from using a jarl board that isn’t suitable for play. Check the rules to see which ones are solo compatible.