Some of my OM-D E-M5 RAW ORF files cannot be opened in Olympus Viewer 2. I have tried re-installing the software from cdrom, re-downloading it from the Olympus web site, and upgrading it from within the software. I have tried re-copying the file from the SD card, and I have tried copying the file from the camera over USB cable (within Olympus Viewer 2). What happens when I click on the RAW file and select "Open RAW Development Window" is that I get a gray screen and nothing else. When I click on most other RAW files they say "Updating... NN%" and then I can edit them. By the way I am using the Windows version of Olympus Viewer 2 installed in XP Home. Has anyone else encountered this problem? I have searched the internet and not found anyone posting about the issue. I am wondering if it is a bug in OV2 or if something is wrong with some of the RAW files coming out of my E-M5. If someone would not mind trying to load my files in your OV2 and let me know if they have the same problem, I would appreciate it. I have uploaded two of my RAW files here: https://www.dropbox.com/sh/o3jb9vlj7bz1gwx/L4ml500C90 The first one (K6172096.ORF) opens fine in OV2 RAW Development but the second one (K6172105.ORF) does not. Thanks for any help in tracking down whether this is a problem with the software or the camera.