I've installed the same version on core 10 with no problems, as a matter a fact it was a breeze, but "db2setup" hangs up with an odd error about the filesystem, which is funny since everything is on a virtual machine. So I'm downgrading to 10 for now, so I can make some progress. Websphincter 7 also installs very smoothly on core 10, not nearly as many hurdles as 6.1 on core 8.