Cloud installation problem with Ubuntu9.10

[amit.singh]

At the time Cloud installation with Ubuntu 9.10 installation.....Given Message appears

Installation Step failed.....
An installation step failed. you can try to run the failing item again from the menu, or skip it and choose something else, the failing step is. Select and install Software when installaing cloud.

[foggyfrog]

I'm getting this same error on Ubuntu 10.10 during the installation. If I go back and restart the "Select and Install Software" step it goes through the postfix install and then immediately dies when the progress bar reaches 10%. My guess is postfix or whatever installs immediately after postfix is causing the error.

Anyone have any ideas?

Thanks!