Several issues have been discovered with the Availability Management Pack release 05.0.5000.0000. As a result we have taken steps to address these in a maintenance release which will be available on our download site as soon as it can be arranged. This release will be 05.0.5000.0001.
Issues that will be addressed in this release:
As a measure to provide relief while the re-release is in progress the updated version of the Availability Reporting.akm file is provided here. Once this management pack is imported associate the required Computer Groups with the Availability Reporting top level rule group as discussed in the MP guide. It will be necessary to wait until the Availability Service Discovery script within the MP executes (daily at 00:23) and then the next execution of the SystemCenterDTSPackageTask. Once this has taken place subsequent execution of the ReliabilityAnalysisReporting task should execute normally.