[TheGeoff]

Looks like there are a couple of compatibility issues using the java submarine editor with version 0.23.

To make a submarine compatible:
First, I recommend opening the .ini files in Notepad++ or similar, because regular notepad screws up the formatting.

1. Open objects.ini and add "UI_folder = default" under the [GENERAL] heading
2. Replace the [TURBINES] section with:
   [TURBINES]
   number=2
   turbineobj1 = 9
   parentreactor1 = 1
   turbineobj2 = 10
   parentreactor2 = 2
3. Open areas.ini, go to Edit -> Replace...
   Tell it to find "AREA_" and replace with "area_" (without the quotation marks)

The sub should now work fine with version 0.23. Sorry for any inconvenience caused and thank you to Tango for pointing out the problem.