I still have the original card, so I did a little experiment and seem to have duplicated your results. Using Finder on a Mac, I transferred the BPAV folder from the card to a folder called Mac on a FAT32 formatted drive. Then on a Windows 7 machine using the file explorer, I did the same thing to a folder called Windows on the same drive. The original card and the Mac transfer are 6,454,921,080 bytes while the Windows transfer is only 6,454,918,310 bytes. On both a Mac and a PC, the original card and the Mac transfer work perfectly fine in Content Browser while the Windows transfer does not. An EX icon is shown for the folder, but no clips appear. It has only happened with footage from a PMW-350 not a PMW-EX3. Why would Windows be changing the files? Below is the content of the XML files. Hopefully someone can chime in with an answer.