Error when installing Reporting Extensions – Version Str

Recently I encountered an issue when installing reporting extensions.

An error occurred during setup of Reporting Services extensions.
Reason: Version string portion was too short or too long.
System.ArgumentException: Version string portion was too short or too long.
    at System.Version..ctor(String version)
    at Microsoft.Dynamics.AX.Framework.Reporting.Shared.SrsWmi.get_ReportManagerUrl()
    at Microsoft.Dynamics.Setup.ReportsServerInstaller.GetOrCreateServerConfiguration(String instanceName, String sharePointServiceApplicationSite, Boolean& createdConfiguration)
    at Microsoft.Dynamics.Setup.Components.ReportingServicesExtensions.InstallConfigurationFiles(String instanceName, String sharePointServiceApplicationSite, Boolean& createdConfiguration)
    at Microsoft.Dynamics.Setup.Components.ReportingServicesExtensions.RunReportingSetupManagerDeploy()

After finding a few references to kernel issues, this was not really my problem, as I had the latest version of kernel.

After some trial and error I found removing an installation of .Net 4 the problem did not recoccur.

Hope this helps…