I updated my theme to the appleberry one and all was fine.
I then changed it to another theme and on restarting my handset i got an uncaught excetion error.
I swapped back to the default theme and all seemed ok BUT now i dont have an e-mail folder.
I have tried seperating the SMS and E-mail folders but i only have the SMS folder on the handset.
When i select 'combine' i lose the SMS one also!!
I have a new message notification at the top of the screen so I know the e-mails are there but just no folder.
At the home screen, press the BB button to bring up the full icon menu. Then press the BB button again and select Show All. Keep in mind that different themes have icons located in different places and potentially have icons hidden.
This happened to me also after loading several themes. Only way to fix it was to go back to the original.
what fixed it in the end, was a wipe of the device (actually upgraded to .109), then installed the themes again and everything has been ok since. So in summary, wipe the device, reload the OS and themes should be ok. dont know why, but this worked for me.