I got the excact same problem .. had to kill blkid twice during install to complete (on probing other OS and installing grub).
I had win7 installed, but chose to "use complete" disk during install (so no other OS would be present) Installer made 61GB(sda1) + 2.7GB Extended(sda2) + 2.7GB SWAP(sda5) on my 64G SSD.
Setup completly made by installer.
I got the excact same problem .. had to kill blkid twice during install to complete (on probing other OS and installing grub).
I had win7 installed, but chose to "use complete" disk during install (so no other OS would be present) Installer made 61GB(sda1) + 2.7GB Extended(sda2) + 2.7GB SWAP(sda5) on my 64G SSD.
Setup completly made by installer.