Get error when first setup northscale web console

Created an attachment (id=376)
error at initial setup northscale server

Install northscale server 1.6.0beta2rc1-20 on 3 rhel 5.4 32bit
All 3 get the same error at initial setup the server web console
http://screencast.com/t/YWQ1MzFlMTc
All show with red box at Dynamic RAM Quota (show over 1 MB)
If I subtract 1 MB, I can go to next step
http://screencast.com/t/NGRmNjc3NGE
http://screencast.com/t/MjNmY2VlM
And the error message when initial setup is done.
http://screencast.com/t/YWU0ZGUyN