illegal type conversion in function

Can anyone tell me why I'm getting an "Illegal type conversion" error during compiling of this function? The first line after the function declaration is the first problem, but what's wrong with it?

btw - It uses the XLnt GUI functions.

Function Recalc()
ship\CATnum = CATtype$(gui_gadval(hullSelector)+hullMin)
ship\CATdesc$ = CATtype$(gui_gadval(hullSelector)+(10+hullMin))
ship\hullVolFac# = CATtype$(gui_gadval(hullSelector)+(20+hullMin))
ship\hullVol# = ship\volTotal# * ship\hullVolFac#
ship\volRemain# = ship\volTotal# - ship\hullVol#
ship\cost = ship\hullCost
gui_settext(category,"Mass Category: "+ship\massCategory$)
gui_settext(categoryNum,"Mass Category Number: "+ship\massCategoryNum)
gui_settext(volT,"Total Volume: "+ship\volTotal)

gui_settext(hullSelector,ship\hullsAvail$)
gui_settext(CATnum,"CAT: "+ship\CATnum)
gui_settext(catText,"Hull Material: "+ship\CATdesc$)
gui_settext(catVol,"Hull Volume: "+ship\hullVol#)
gui_settext(hullCost,"Hull Cost: "+ship\hullCost)

gui_settext(costT,"Total Cost: "+ ship\cost)
gui_settext(volR,"Volume Remaining: "+ship\volRemain#)
End Function

I've tried setting the object of the type ship to Global but it didn't matter.

I suppose "hullSelector" is an instance of Gadget. Have you checked it's global? if it's not then the compiler will take it as an int -> invalid conversion (int -> object).
I don't see anything else that could lead to an invalid conversion (given that ship is global, and hullMin is not an object).

Yep, you were right. Globalization was definitely the problem. None of the XLnt objects were global and so they weren't recognized in the function. Thanks.

<snip>

??? I don't know that one.

doh! - didn't u get my email?

Thanks Yappy, yes I got it. But I didn't get to it in time before this got posted. Sorry I didn't let you know right away. Thanks very much to you both :)