Quote: "isn't letting me incorperate weapons into my level and also enemies aren't functioning correctly"
That sounds very very very vague.
Do you mean your level simply crashes when you use weapons (and if, which weapons are those)? Or is it actually impossible for you to place a weapon during level build?
And "how" should your enemies function correctly? I hope, it's not a "I want them to..." problem, because there is no "I want" in building an FPSC level. You can script the enemies and hope you made no mistakes - thats all
In case you find my grammar and spelling weird ---> native German speaker ^^