SpiderBasic

If I enable 'Optimize javascript output' then I get an error on the last line of the program saying Java is required. I have Java on my system, do I have to point to it somehow or does it have to be a specific build?

Sounds like Java it isn't in %PATH%

Yes, you need "java" in your path (open a CMD and type "java", if it's a command not found error, then you have to put it in the path)

Ahh... I see...

At least you know now that this needs to go in the instructions.

...or if not in path then maybe it should check a few common paths that Java would normally use?

Java set it's path during it's installation, no need to try things : you must have removed it (either manually or with a tool).