After testing Alfresco Open Source, we decided to test Alfresco Enterprise Trial Version. I installed Enterprise Network: Current version 1.2.0 schema 6.
After some problems due to alfresco/alf_data I can't connect with admin /admin . (with guest no problem)
It sounds like you still have a configuration issue.
Not being able to log in as admin is a very good indication you are pointing to the wrong location for the index and content. Make sure you have not added any properties files as extensions; if you have, check the properties they contain.