I had the same problem installing Kubuntu Feisty Fawn 7.04 over an existing Kubuntu Edgy Eft 6.10 without changing existing partitions.
-- GRUB "Error 15" after edgy->feisty upgrade of Kubuntu https://bugs.launchpad.net/bugs/102070 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs