GuiWindowCtrl crash question

I'm getting a crash from GuiWindowCtrl in PositionButtons(). First off, let me say my scripts are doing something I'm sure is wrong, I just don't know what it is. It's causing one of my dynamic GUIs to try to start up too early. Basically, they are calling .setPosition() on a window, which eventually causes the crash.

I was able to stop the crash by moving one line from onWake(). Then, the GUI opens up fine, no other quirky behavior. Here is the code:

Where the crash takes place, in PositionButtons() (called by resize()), you see this:

S32 buttonWidth = mBitmapBounds[BmpStates * BmpClose].extent.x;
   S32 buttonHeight = mBitmapBounds[BmpStates * BmpClose].extent.y;

The crash takes pace because mBitmapBounds is pointing to garbage. So, when you try to access it, a crash occurs.

But in another function, namely onWake(), you see this:

mBitmapBounds = mProfile->mBitmapArrayRects.address();
   S32 buttonWidth = mBitmapBounds[BmpStates * BmpClose].extent.x;
   S32 buttonHeight = mBitmapBounds[BmpStates * BmpClose].extent.y;

When I moved

mBitmapBounds = mProfile->mBitmapArrayRects.address();

to the function PositionButtons(), to make the two code blocks match, it stopped crashing.

So my question is, since onWake() is called quite a lot, and assigning mBitmapBounds happens there, is it ok if I also move it to PositionButtons()? Is there a reason why it's left out?

I'm going to keep looking into my scripts to find out what going on, but since I came across this I thought I'd ask.
Thanks to any who reply!