Yeah, that's prolly a really dumb question, but every time i try to open it it says access denied o.O

Hmm, it's always worked fine for me... Check the file permissions?

Does it work if you close the litestep process?

That happens a lot; something gets borked with a file association. Just right-click on the file and select your desired editor from the "open with" menu, and select the check box to "always use this app" or whatever it says. That ought to fix it.

hold down shift while you rightclick if there is no "open with"