Natty Installer Crashes

I can confirm the issue is still present in the Alpha2 release of natty. I have the same setup as Kent Baxley:

1.) Ubuntu 11.04 alpha2 amd64
2.) USB startup-ISO generated by multisystem
3.) Installation crashes with an Ubiquity assertion error about 75% through installation.

snippet from syslog:

Feb 4 20:29:14 ubuntu plugininstall.py: log-output -t ubiquity chroot /target dpkg-divert --package ubiquity --rename --quiet --remove /usr/sbin/update-initramfs
Feb 4 20:29:14 ubuntu ubiquity: update-initramfs: Generating /boot/initrd.img-2.6.38-1-generic
Feb 4 20:29:14 ubuntu ubiquity: Cannot find /lib/modules/2.6.38-1-generic
Feb 4 20:29:14 ubuntu ubiquity: update-initramfs: failed for /boot/initrd.img-2.6.38-1-generic
Feb 4 20:29:14 ubuntu plugininstall.py: log-output -t ubiquity chroot /target update-initramfs -c -k 2.6.38-1-generic
Feb 4 20:29:14 ubuntu plugininstall.py: log-output -t ubiquity umount /target/tmp/.X11-unix
Feb 4 20:29:14 ubuntu plugininstall.py: log-output -t ubiquity chroot /target umount /sys
Feb 4 20:29:14 ubuntu plugininstall.py: log-output -t ubiquity chroot /target umount /proc
Feb 4 20:29:14 ubuntu plugininstall.py: log-output -t ubiquity umount /target/dev
Feb 4 20:29:14 ubuntu plugininstall.py: log-output -t ubiquity chroot /target mount -t proc proc /proc
Feb 4 20:29:15 ubuntu plugininstall.py: log-output -t ubiquity chroot /target mount -t sysfs sysfs /sys
Feb 4 20:29:15 ubuntu plugininstall.py: log-output -t ubiquity mount --bind /dev /target/dev
Feb 4 20:29:15 ubuntu plugininstall.py: log-output -t ubiquity chroot /target umount /sys
Feb 4 20:29:15 ubuntu plugininstall.py: log-output -t ubiquity chroot /target umount /proc
Feb 4 20:29:15 ubuntu plugininstall.py: log-output -t ubiquity umount /target/dev
Feb 4 20:29:20 ubuntu ubiquity: umount: /target/cdrom: not mounted
Feb 4 20:29:20 ubuntu plugininstall.py: log-output -t ubiquity umount /target/cdrom
Feb 4 20:29:20 ubuntu finish-install: Disabling CD in sources.list
Feb 4 20:29:20 ubuntu plugininstall.py: Exception during installation:
Feb 4 20:29:20 ubuntu plugininstall.py: Traceback (most recent call last):
Feb 4 20:29:20 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1440, in <module>
Feb 4 20:29:20 ubuntu plugininstall.py: install.run()
Feb 4 20:29:20 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 55, in wrapper
Feb 4 20:29:20 ubuntu plugininstall.py: func(self)
Feb 4 20:29:20 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 174, in run
Feb 4 20:29:20 ubuntu plugininstall.py: self.install_extras()
Feb 4 20:29:20 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1029, in install_extras
Feb 4 20:29:20 ubuntu plugininstall.py: self.do_install([package])
Feb 4 20:29:20 ubuntu plugininstall.py: File "/usr/lib/ubiquity/ubiquity/install_misc.py", line 716, in do_install
Feb 4 20:29:20 ubuntu plugininstall.py: mark_install(cache, pkg)
Feb 4 20:29:20 ubuntu plugininstall.py: File "/usr/lib/ubiquity/ubiquity/install_misc.py", line 489, in mark_install
Feb 4 20:29:20 ubuntu plugininstall.py: assert...

When it happens here usually the installer just plain freezes, using the installer from the desktop (try ubuntu...) always works. This predates A2 and still is occuring

I have been trying to make a clean install of Natty Alpha 2 from the current daily iso's and have had a least three previous crashes
from three different daily iso downloads.

My latest crash was from a download of the original Feb, 2 Alpha 2 Natty 32 bit iso. The crashes have occurred after choosing password and clicking forward, or during data transfer from other partitions. However, I have never chosen to transfer data, but my sda5 partition with Lucid 10.04 showed to be mounted and was not unmounted by by the installation attempt. I do have a working Natty 11.04 Alpha 1 partition working on my laptop, but have not updated it to Alpha 2 yet.

Have tried the direct Install Ubuntu button & installation from Try Ubuntu desktop.. Neither choice worked for me.

i had the same problem with natty beta from usb drive.
i even used my maverick from usb too, it said something about upgrading the installer, then, crashes exactly like natty.
note that i installed maverick from usb before and it went well, wich comfirmes that the problem is in ubiquity.

note: my architecht is 32bit