Sabayon 3.3 Installation Error

I'm trying Sabayon 3.3 (x86 full DVD edition), and trying to install it on my hard disk by clicking on Install on Disk (meaning anaconda) on the desktop.

1. I get the Welcome to Sabayon Linux message, and I click Next.
2. In Language Selection I choose English (English) which is the default, and I click Next.
3. In Keyboard Configuration, I pick the default which is U.S. English.
4. Clicking Next here gives/generates two messages, one of them says "Searching for Sabayon Linux Installations..." and the other one is the following:

Exception Occurred

An unhandled exception has occurred. This is most likely a bug. Please copy the full text of this exception or save the crash dump to a floppy then file a detailed bug report against anaconda at http://bugs.sabayonlinux.org

And here is the full text:

Traceback (most recent call last):
File "/opt/anaconda/usr/lib/anaconda/gui.py", line 867, in nextClicked
self.dispatch.gotoNext()
File "/opt/anaconda/usr/lib/anaconda/dispatch.py", line 140, in gotoNext
self.moveStep()
File "/opt/anaconda/usr/lib/anaconda/dispatch.py", line 208, in moveStep
rc = apply(func, self.bindArgs(args))
File "/opt/anaconda/usr/lib/anaconda/upgrade.py", line 40, in findRootParts
id.rootParts = findExistingRoots(intf, id, chroot)
File "/opt/anaconda/usr/lib/anaconda/upgrade.py", line 69, in findExistingRoots
upgradeany = upgradeany)
File "/opt/anaconda/usr/lib/anaconda/partedUtils.py", line 665, in findExistingRootPartitions
relstr = getReleaseString(mountpoint)
File "/opt/anaconda/usr/lib/anaconda/partedUtils.py", line 475, in getReleaseString
if distribution_release_path is not None:
UnboundLocalError: local variable 'distribution_release_path' referenced before assignment

It occurs regardless of using graphical installer, text installer, or installing after booting normally.

Any help would be appreciated. This been fixed by updating anaconda.