The file IBMRemote.dll cannot be found or permissions on that file are set such that it cannot be loaded. File \DS6000StorageManager\SM\bin\IBMRemote.dll should be in the installation directory of your management console. It can be found in the \SM\bin directory on the installation CD.
Ensure that file IBMRemote.dll is on your system and permissions are properly set. Then resubmit the task.