I wanted to try knoppix on my hard drive, but for some reason the knoppix-installer is giving me some problems.

First, right now I have the following partitions on my hard drive: 26GB NTFS for windows, and 4GB of unpartitioned space which I wanted to use to try out knoppix from the hard drive.

I tried the following both by using the standard kernel and the newer one by typing knoppix26:

1) from the terminal window, i typed "sudo knoppix-installer". A dialog comes up saying that I don't meet the requirements (but isn't 4GB enough for a standard installation?)
2) I typed "IGNORE_CHECK=1 sudo knoppix-installer". I start by selecting a "beginner" installation. But when I click Next, I get some error from Xdialog (I think) and the terminal window displays the help for the xdialog command?? The the installation quits.

After, I tried to reboot with the "knoppix 2" (text mode) option, and run "IGNORE_CHECK=1 sudo knoppix-installer" again. Still, after choosing the "beginner" installation, I would immediately get this:

Fatal dialog error:
Error: Expected at least 7 tokens for --radiolist, have 4.
Use --help to list options.

And the installation would abort.

Am I doing something wrong? Can anyone help? Thanks