Like the subject states when saving a physics game with game_save, specifying SV_All+SV_PHYSICS. When loading this game with game_Load I get an error message stating that the object executing the physics instruction is not a physics object.
Note Marcos car demo does the same if you enable the load and save instructions at the end of main.wdl.

A6.314 Pro.

Note the obsolete save and load functions actually work from within the same level, but do strange things when executed from another level.

Jethro.