ERP Platforms I have tested:
Platform: Ubuntu Server 7.10, Tomcat5.5
Both installed easily enough, but the Accountants were gun shy. Somewhere along the line they had had a difficult experience with ERP in general, but now OpenSource ERP in particular. I found myself wishing that I had paid more attention to accounting. As it was I had a very hard time just staying awake. Maybe there is a good book out there that explains the principles, and focuses on the financial modeling required to get an ERP off of the ground. Some day I would really like to get a good pilot of one of these off of the ground.