The files such as loader.ebs and components and widgets where are they in this new environment, I cant seem to find anything useful
Could you be more specific what are you searchin for? For which software?
Assuming you're talking about the old Component Exchange stuff, it is at
https://developer-content.emc.com/developer/devcenters/ContentManagement/index.htm
Check out the left column of the Overview of the Documentum comunity of this site...
