I followed the steps accordingly to clear up some space on my AT&T Curve 8310.

When the device booted up, the vanilla theme was used in absence of the AT&T theme, which I had removed.

I left the BB Dimension L theme for me to use, but when I go into the options, I am unable to select it.

The camera no longer works, either. The device displays:

"Could not start the camera. Close other applications and try opening the camera again."

It also shows that there is only enough space for 12 pictures, which was what the camera application displayed prior to the memory optimization.

I am using the Vodafone 4.5.0.37 OS.