I've been noticing some that some really strange things happen when I attempt to export the mesh files from the .u package files for the game "Star Trek: The Next Generation – Klingon Honor Guard" with many of the tools that I have. The tools that I have used to export the model files are WOTgreal, UTPT and UModel. I also view the models after I export them using this blender plugin.
When I use UTPT to export the meshes, the .3d files are generated, but when I try to the view the .3d files with the blender plugin, it throws this error

When I use WOTgreal to export the meshes, the program crashes the moment I press the "export as .3d" button.
When I try to view the Klingons.u file in UModel to export the meshes, the program throws this error

I know that Klingon Honor Guard uses a build of Unreal Engine 1 that predates Unreal Tournament, so that may have something to with it.
Any advice would be appreciated.