When trying to create a service instance for the SQL reporting service in Management you receive an error
VALIDATION Could not load file or assembly 'Microsoft.ReportViewer.Common, Version=8.0.0, Culture=neutral, PublicKeyToken=[token] or one of it's dependencies. The system cannot find the file specified
SSRS is no longer a supported component for any K2 Five version as mentioned in the K2 compatibility matrix below.
This is considered as a legacy component in K2 Five and although SSRS might still be used, it will not be covered under K2 Support