Error: Script5022: No Region Setting for Map

[CraigMcDade]

Getting the following error whenever I resize my app (open in IE) via the slider on the TOC.

SCRIPT5022: No region setting for map
utils.js, line 2 character 1078

Any clues on a fix or what I've done wrong? Its set as "center" in the HTML but I'm figuring thats not what the error is saying...

EDIT:
Turns out I had the center tag in the wrong div. I added it and it removed the error, however, the map doesn't resize...

EDIT 2:
Updated the resize statement to reference the correct Div.