I have an E71 updated with the new firmware with the following specs:
200.21.118
27-11-2008
RM-346
Nokia E71-1 (265.03)
8 GB SanDisk MicroSD
No encryption
I installed the photo browser and I loved it but some of my pictures showed only with grey boxes. I decided to wait for them to appear (I read that it might take some time) so I go to the Home screen and then tried to open some applications from the menu. To my surprise the shortcuts were not working - when I tried to open Office I got Google maps started, Download started Clock, I could not open Tools, etc. All was fine after restarting the phone.
I tried again and this time I had the file manager running before opening photo browser. I wanted to see if there was a problem with my pics and maybe that was the reason not to have them appear. After photo browser has been generating thumbnails for some time I switched to file manager to browse the files missing a thumbnail. When I went to the Memory card tab I saw many folders which had strange names consisting of letters, digits and symbols. I could not open any of them as well as the other "normal" folders some of which were missing. All was fine after restarting the phone.
It was after 3 or 4 more restarts that I saw my programs' shortcuts were missing from the home screen and I realized that the memory card cannot be read anymore (tried on PC as well). So a quick format and uninstall for photo browser fixed it all.
I liked the application very much and I will be happy to install it again if I do not have to format my memory card :).