After upgrading the Symantec Management Platform to MR4 tasks/jobs cannot be loaded. Creating a task/job is also impossible.
The error seen in the logs is the following:
Process: w3wp (4308)
Thread ID: 115
Description: Error getting node url: Altiris.NS.Exceptions.AeXException: An unexpected exception has occured during CreateInstance. (Assembely:Altiris.SoftwareManagement, Version=18.104.22.168, Culture=neutral, PublicKeyToken=d516cb311cfb6e4f Type:Altiris.SoftwareManagement.Tasks.DeliverSoftware) ---> System.IO.FileNotFoundException: Could not load file or assembly 'Altiris.TaskManagement, Version=7.1.1800.0, Culture=neutral, PublicKeyToken=99b1e4cc0d03f223' or one of its dependencies. The system cannot find the file specified.