Freeze when selecting a different drive from the main list

Since updating to v2.13.670 (64-bit), I'm experiencing a 100% repeatable freeze.

1. Analyze drive C:

2. Click another drive - e.g. D:

3. Click drive C: again

The drive map for C: appears again, but the drive letter does not get highlighted (e.g. D: is still highlighted). Defraggler then freezes solid and I am forced to end the process. CPU and Memory usage remain idle, according to the Task Manager, which reports a working set of 256,128 K after analyzing my drive.

The curious thing is it only happens when the C: drive has been analyzed. If I do not touch it, I can analyze/defrag any other drive without issue. Conversely, if I do not click away from the C: drive, I can perform any operations on it as normal.

Even stranger: If I click Analyze again, then click Stop before it completes, the freezing bug will not be triggered. It is only when I have a completed analysis of C: (colored drive map), click another drive, then come back to C:, that it crashes

My C: drive is an SSD, a 1st generation OCZ RevoDrive X2 240gb. It has a single partition with my OS, apps and games, totaling 413,143 files and 77,968 folders. The other drives have less than 20,000 files each.

OS: Windows 7 Ultimate 64-bit (fully updated)

RAM: 48gb

CPU: 2x Xeon X5660

If you're wondering why I would defrag my SSD, well I don't, but Defraggler's analysis is still useful, especially its "File List" tab, for quickly finding large or extremely fragmented files.

Not confirmed here. Do you by chance have a floppy drive set in bios without a physical floppy drive attached?

please run in debug mode http://www.piriform.com/docs/defraggler/troubleshooting/running-defraggler-in-debug-mode (regular debug is fine for now)

recreate this issue

and post the log to this thread

thank you

Debug log attached.

Defraggler64.exe.2_13_6702013-04-09_23-12.txt

thanks, the development team reads all threads, so theyll be sure to see this and look into this