I've been using the BB Dimension Today Plus theme that has the Today screen and Zen icons available by a scroll to the right:

Today Plus Theme Review and Download

I just upgraded to os 4.5.0.52 on my 8300. If I perform a battery pull or soft reboot, the icon arrangements I’ve made on the home screen (that drive the Zen menu) are lost, and the icons revert back to the original arrangement. Is this a compatibility issue because this theme was designed for 4.2 or lower os? Is there a way to correct this? Thanks.