Just tried and it reloaded the menu on my machine just fine. Did you try save the game and reload it? If you have a save that doesn't load a menu I'd be keen to have a copy and see what's going on.

"Onload()" should be running on each re-wind or load of the mod, and that fires up the interface.

I get the same bug sometimes. In my recent game, I see some red error text in the dialog box at the lower left. The text says "Error in Script (Global): chunk_4(2166,9-108):attempt to perform arithmetic on a string value". Also, if I switch tables, the same message is displayed across the top of the screen.