Error adding RDS role services on a SQL 2012 host

Hello there,

I am not being able to add the RDS role services on my server which has SQL 2012 installed.

I had problems with SQL before, I had RDS installed and couldn't install SQL correctly, i was getting an error at the end, found no solution from MS online only workarounds that users found . Now I have an SQL and I cannot install RDS...

After adding RDS and the server restarts I get a pop-up window on server manager stating that it was not possible to add RDS role services. The only eventviewer error that I'm able to relate to this is:

Log Name:      Microsoft-Windows-ServerManager-DeploymentProvider/Operational
Source:        Microsoft-Windows-ServerManager-DeploymentProvider
Date:          20/06/2013 12:07:53
Event ID:      403
Task Category: GetAlterationState method call.
Level:         Error
Keywords:      
User:          domain\user
Computer:      LAB-RDS-1.domain.local
Description:
GetAlterationState method returned Failed. Error: The request to add or remove features on the specified server failed.
An unexpected error has occurred. You can view event logs in Event Viewer to learn more about possible causes for this problem.

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-ServerManager-DeploymentProvider" Guid="{66AF9A38-2D94-11E0-A076-8534E0D72085}" />
    <EventID>403</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>8</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2013-06-20T11:07:53.122404900Z" />
    <EventRecordID>469</EventRecordID>
    <Correlation ActivityID="{0A2ED679-106C-418F-9BC5-AA19BA303839}" />
    <Execution ProcessID="2184" ThreadID="1940" />
    <Channel>Microsoft-Windows-ServerManager-DeploymentProvider/Operational</Channel>
    <Computer>LAB-RDS-1.domain.local</Computer>
    <Security UserID="S-1-5-21-3226323078-3103047112-863665735-1276" />
  </System>
  <EventData>
    <Data Name="message">The request to add or remove features on the specified server failed.
An unexpected error has occurred. You can view event logs in Event Viewer to learn more about possible causes for this problem.
</Data>
    <Data Name="requestGuid">{24A536AD-192A-56EB-201E-7CA701068E49}</Data>
  </EventData>
</Event>

I already checked the Microsoft technet library and there aren't references concerning SQL installations on hosts with RDS role services installed.

Any help will be great!

David

(Windows server 2012 doesn't seem to have as much docs as the previous versions.)