My Droid X has some picitures that have a generic symbol instead of the picture and it varies which ones will be affected each time I enter the gallery.
After taking a picture it will not store. If I take more than one picture then the first one might store.
When I close and open the gallery the recent pic might be shown as a symbol and will not open.
Naturally when I took it into the store for help it behaved fine and I looked like an idiot! ;-)
Sometimes the entire gallery is just represented by the symbols or picture icons.
Awhile back I got a new SD card as the first one self destructed taking all my stored pics with it. Perhaps the SD card isn't well.
thanks, for any input, bill