Yes, I'm having a very similar problem on Mint 13 MATE 32 bit edition. I install, then restart, and just end up getting a "grub-rescue" prompt afterward. I've tried installing from USB and DVD, each of which doesn't seem to work very well. With USB, I get a "failure to install GRUB" on /dev/sdb (flash drive partition), but I don't on DVD. I downloaded Super Grub 2 Disk (
http://www.supergrubdisk.org/) and was able to boot either from Mint 13 or Windows XP. I just burned to CD, then chose the "Find any operating system" at the top. It takes a REALLY long time to detect everything (more than 5 mins, appears to hang at some points), and then it will give you at least 5-10 "error: device not detected" messages. But eventually, I think you'll be able to boot from either system. Now for getting GRUB working on the hard drive, that's something I have no clue how to do. :/