Install:Parallel_Java - hpgDesigns/hpgdesigns-dev.io GitHub Wiki

ENIGMA currently only supports 32bit compilation for the plugin and games. This means that despite LateralGM supporting 64bit Java installations on its own, when using LateralGM with ENIGMA you must have a 32bit Java installed either alone or in parallel with your 64bit version. If you would like to keep your 64bit Java and also use the 32bit version for ENIGMA, it is as simple as installing the 32bit Java from Oracle.

After a 32bit Java is installed if no other Java installation exists you can simple run ENIGMA. However if you still also have 64bit Java installed you may need to explicitly state the 32bit version when launching ENIGMA. This can be easily done on Windows by changing the settings.ini value for the key IDECOMMAND to something like the following.

idecommand="C:\Program Files (x86)\Java\jre1.8.0_25\bin\java.exe -jar -Xms256m -Xmx1000m"