Unable to delete package.
Attempt to delete package results in
error log : E03020054: The package named <package name here> is being used by Checkin.
The reason may be that the client killed the Harvest client process in workbench during the check in process, this can leave the package in a non "Idle" state which will not allow any work to continue with that package.
Use HPKGUNLK command line utility to reset the package status back to "Idle".
hpkgunlk packagename -b brokername -en projectname -prompt