[vectorcatch]

I tried running this on Windows 8 x64 and I get the following attached error screen.

I did a quick bit of testing and discovered that if I put an SD card in my memory card reader, the program starts fine.

My guess is that you are enumerating all the physical drives and trying to get their geometry. However, this call fails on the card reader when nothing is inserted. Should be an easy enough fix, you can either check to see if media is inserted or just assume the drive is offline if the call fails.

 

[vectorcatch]

With my readers the drive letter is present as long as the device is plugged in, but the drive is greyed out with a no media indication.

Not all media readers do it this way. Some will only show a drive when media is inserted. The one on my laptop works this way.

This problem happened with both the built in reader on my Dell U2410 and a Kingston USB 3.0 reader.