line 43 error, inventory variable

[rock_chick]

I can save my game alright but when I try to test it this error comes up and wont allow me to.
I don't understand what it's talking about when it says I've got more than one thing labelled as inventory.

I haven't done anything with the 4th room yet like add any hotspots.

[SSH]

Have you got any GUIs or characters or objects or views called inventory? Call them something else...

[rock_chick]

Yeah I did, I had a sprite category with that name and a GUI button with that number and after I changed both to something else the error went away. Strange thing is both were changed to the same, different name and that didn't cause an error, weird.
Anyway thanks a lot for the help.
BTW, I know this is off topic but since I'm finishing up my GUI, what's the general GUI options/buttons that are most appropriate or commonly used in such games?
Again to the mods I'm sorry this is off topic but I didn't want to pass up an opportunity to ask since I'm not sure where on the board would be appropriate to ask such a thing. I wont make a habit of it!