I upgraded to the new build and restarted my Mac Pro (4GB). Then I launched the VM and it started normally, but prompted me to upgrade the Tools version, which I did, and then restarted the VM. Now it just sits at the initial VIsta splash screen. Per a suggestion in another thread, I went to Parallels properties and set the memory to allocate manually (set to 1400MB), and also made sure this was the same as my VM preferences memory limit. No luck.
I had similar issue, After beating on it i finally got it up enuf to un-install the tools. What i did was turn off my the CD rom, wierd I know, I've seen where other have had to turn off USB devices in guest setup. good luck, and hope parallels comes out with a tools that will work with Vista soon
More on 3630 and Tools Ben, you're a genius. Deleting my CD/DVD drive from the VM properties allowed me to boot into Vista without any incident. Now my question for the Parallels folks is, why does this work, and can you guys fix it? What I've always done is run Parallels in XPSP2 compatibility mode as the Administrator user. It would be nice not to have to do this every time I upgrade builds.
Thanks for figuring this out! I couldn't boot into Vista since installing the latest beta update but this solved it. Now I just can't install the tools cuz it requires the CD-ROM! But at least I can use Vista RC2 right now without booting into safe mode. Hopefully the Parallels Team will see this and fix it for the next release!