SO, I have been doing some experimentation of the above commands and ideas.

Of the 28 maps, 25 appear to work fine using the ingame editor and 24 work fine ingame.

This leaves:

tomswamp: (wont open ingame because no player start)

JLow (Largest map file included). "Cannot find package "UnrealShare"
Jazz3D "Cannot find class in file 'Class Engine.TimeDemoInterpolationPoint"
JMPAmaxing just crashes, but upon tweaking you get the message: Cannot find class in file "Class JazzMultiPlayer.TreasureHunt"

I iintend to try and open these via editor command console but i have not yet figure out how to open it in editor.

If anyone knows if these packages can be fixed or copied from UT99 or Unreal let me know because I have both. Also, the treasure hunt based error seems preposterous seeing as Treasure Hunt works 100% perfectly as far as I can tell.