I had the same error. I was trying to install Ubuntu 11.10 and 12.4 from USB, but partman (and some other configuration tools) crashed. But then I created a new usb-key with 150 mb instead of 50 mb of persistence space using Lili Usb Creator on Windows. Ubuntu 12.4 is now installing without error:)
I had the same error. I was trying to install Ubuntu 11.10 and 12.4 from USB, but partman (and some other configuration tools) crashed. But then I created a new usb-key with 150 mb instead of 50 mb of persistence space using Lili Usb Creator on Windows. Ubuntu 12.4 is now installing without error:)