With my N9 running on PR1.2, I connected it flawlessly to my Win7 desktop via bluetooth. There was kind of a registering procedure on the PC for this particular device and voila, there it was with a dedicated folder in the system.

Now with 1.3, win explorer crashes when clicking on the N9 folder.
Crash-report says it's caused by btwapi.dll which is the Broadcom Bluetooth module.
I'm guessing it's due to changed adresses or any kind of failed Identification but I can't really tell.

Solution might be to reinstall the software/driver (as of here) and re-register the device.
Anyone else experienced similar?