On the suggestion of another poster, I am pleased to report that I am using VMWare fusion with my BCD436, and there are NO ISSUES. Apparently VMWare has better isolation from the Mac OS, therefore keeping the SD card from being written by OS X.
Apparently I spoke too soon. Hooked up my 436 last night and it refused to read the card.. When I went to eject the 436 I got an error saying Windows could not eject it because it's being used by another program. This needs some serious investigation because it worked quite well at first. I do not think it is a Uniden issue any longer.. Something is opening when the scanner is connected and I need to know what it is. I checked finder in the Mac side and the scanner does not show up.. I set Fusion for maximum isolation as well, not even allowing for drag and drop. We will see!Yeah, there is an issue with Parallels USB driver and the x36 radios. It doesn't see the USB mode as a drive and it corrupts the SDCard. It has nothing to do with mac or OS X. It is a Parallels / Uniden issue.
However you can still use Sentinel with Parallels. You will just need to use a card reader to program the MicroSd card instead of using the Uniden radio directly.
VMWare doesn't have this USB issue.
There are a lot of uninformed here who think that Macs corrupt SDCards which isn't true. It is a Parallels / Uniden USB driver/ firmware issue and has nothing to do with OS X.