Runtime Error

Hello,

I am creating a new site starting from another site already exitente, I copied all the files, including web.config. When trying to open a page displays the following message in the log and error on page presents Runtime Error.

Event code: 4010 
Event message: An unhandled security exception has occurred. 
Event time: 27/11/2014 15:04:14 
Event time (UTC): 27/11/2014 17:04:14 
Event ID: 223bc3218b744ed39e19bf3b16f90697 
Event sequence: 5 
Event occurrence: 1 
Event detail code: 0 
Application information: 
    Application domain: /LM/W3SVC/359088157/ROOT/ASTECSharepoint-11-130615814226611510 
    Trust level: Full 
    Application Virtual Path: /ASTECSharepoint 
    Application Path: C:\inetpub\wwwroot\wss\VirtualDirectories\5050\ASTECSharepoint\ 
    Machine name: SJO-SP-DEV-01 
Process information: 
    Process ID: 10672 
    Process name: w3wp.exe 
    Account name: INTELBRAS\spapppool2013 
Request information: 
    Request URL: http://sjo-sp-dev-01:5050/astecSharepoint/cadastroos.aspx 
    Request path: /astecSharepoint/cadastroos.aspx 
    User host address: ::1 
    User: 0#.f|fbaprovader|gabriel.junckes 
    Is authenticated: True 
    Authentication Type: Federation 
    Thread account name: INTELBRAS\spapppool2013 
Custom event details: