Bug: I bet that you were only processing the last 1MB of data (the default) and it didn't find the 'material'. I need to check whether the material was found and if not, prompt for a 'retry' letting the user pick a larger amount of data. Can you test again but select either 'Entire File' or a large number of megabytes? Also, check your 'temp' directory for any large .cr2 files that may have been left there when the script bombed. Suggestion/request: I figured that someone would ask for this. I'll think about a good solution. In the meantime, I'll try to make a special case for you. I work my day job on mon, tue and wend. I'll try to get to this on thursday (when the baby sleeps).