Fix ALFRESCO intranet issues

We have one intranet working in LOCAL using ALFRESCO product with some extensions. Since product installation never work fine because the always appear some errors like image attached or portal is down. All this happen during test with one user, so we think that server is not overcharged. Was installed Alfresco comunnity and some extensions, no custom programming... only was sincronized with emails/usernames in active directory for send notifications to users when new documents are uploaded. The server is cent os, and is running vmware virtual machine for run the server only. i suppose if ALFRESCO is official product, something n installation or maybe server dont have requirement, but i am not sure. We are looking and professional for help us fixing this intranet.. We also require something that read our requirement and dont simply post I CAN DO IT because we are going to deny all this proposals. We want also know how remotely you think in fix this problem? ideas we have.... i dont know if is possible give remote access to site.. or backup the site and transfer the site to you for test... i dont know so propose the best idea for help us on this. Any question about server enviroment let me know