As you are no noob in programming, you should start to get comfortable with the API so you don't look like a noob with postings like the one above

so does your trial last more than 30 days ?

also, what do you mean by falling through the floor ? do you mean it goes into models when you get too close ? if so, then set camera.clip_near to 1

ps. shadec sucks if you dont know how to use it so i'd suggest haxor keep is unhelpful personal comments about the system to hisself unless he has facts to back up why shadec is "shit" and is "buggy"

I could be wrong but dont you need the paid version to work with shaders?

with trial version you can use shaders but you can't publish your game