Just SPC and its been updated. One thing, the map is old (beta1.3 at least) and there are chests filled with items not normally obtainable (like ice). I haven't used TMI, but might this be the problem?
Checked the chests (its a test map and there are construction materials available) and their are no odd block types (engines, etc) that are not found in the game (mod only). So would I need to install the TMI mod in 1.2.3 to convert the map?
Still loads fine into 1.1