These days I´m implementing a SCOM 2012 R2 on a environement where I have one OMS, one Reporting server and a two node sql 2012 SP1 failover cluster.
The problem that I have been experiencing is when I was installing reporting services (SSRS) in the dedicated server for that porpouse. The error showed in installation log OpsMgrSetupWizard.log was:
Info: :Could not connect to Management Server: OperationsManagerServer with exception: Threw Exception.Type: System.ArgumentException, Exception Error Code: 0x80070057, Exception.Message: Version string portion was too short or too long.
[15:43:35]: Info: :StackTrace: at System.Version.TryParseVersion(String version, VersionResult& result)
at System.Version..ctor(String version)
at Microsoft.EnterpriseManagement.OperationsManager.Setup.Common.SetupHelpers.IsManagementServerCurrentVersion(String managementServer)
In the wizard I saw the message: Unable to connect to the Data Access service for this management server. Ensure the Data Access service is running and that the service, the management group, and setup are all the same version.
I solved it adding data writter account, data access account and sdk account to a gpo that allow for these accounts log on locally in the Operations Manager servers.