How come some themes work and others do not on my pearl? For example today i downloaded the vista 2.0 theme and bVista. They both appear in my list of themes after they are downloaded, but only the vista 2.0 works. The other one shows up but i cannot click on it to enable it. Does anyone know an answer for this?

Wirelessly posted (8100 Strike 2)

Probably not made for the pearl.

Sometimes a battery pull reboot is first required for a theme to work on the BB.

Also make sure all dimension themes are installed, and that you have a few MB of free space.

Wirelessly posted

Right on the money. I use to download themes, and they would never seem to show up for me to click on. That's when I found out about rebooting (thankfully, from one of the members here).
Give it a shot.