Have you tried running the command manually?
Program Files\LANDESK\ManagementSuite\Install Only Files\LANDesk.Common.RunMethod.exe assemblyFile="LANDesk.Install.Common.Actions.dll" Class="BridgeIT" Method="UpgradeInstances" commandLine="UpgradeCommand"
Try running from a command line to see any specific errors.
Which base patch did you install? Which BridgeIT patch are you trying to install that is giving you the error?