it is already nmc,just it needs this under given mqh file in include folder.
You need the two mqh files from this zip file, and then it will work
Nothing to fix - that is compiling as it should
If you are looking for non-repainting step stochastic, use newer versions of step stochastic
As I told : there is nothing to fix. Compile it and it works (as you already know that - when you run it it looks exactly like on the attached picture, without any "fixing"). Repainting is out of the scope of "fixing" that indicator. For that you shall have to use newer versions. I am not going to "fix" that version to be the same as the new versions. Sorry
That thing is not an indicator. That is an EA. Copy it to experts folder, compile it and run it as any other experts