If you're having problems with custom themes as in on the zen theme home page the banner objects would be customized but as soon as you press menu, the banner objects on the icon home screen would go back to the default settings/positions.

Replacing the default net_rim_theme_bbdimension themes (icon, L, today and zen) from OS 4.5.0.18 into the Java folder of .37 solves the problem with banner objects reverting back to default.