We have group policy preferences adding a scheduled task to a bunch of our servers. Some of our servers recieve the task fine. Others failed to add the task.

I have enabled GPP Logging and I find the following in the log of the server that failed to add the task.

2010-04-30 12:17:00.163 [pid=0x474,tid=0x16f0] Started package execution.
2010-04-30 12:17:00.163 [pid=0x474,tid=0x16f0] Set package timestamp variable (2010-04-30 16:16:59).
2010-04-30 12:17:00.163 [pid=0x474,tid=0x16f0] Starting class <ScheduledTasks>.
2010-04-30 12:17:00.163 [pid=0x474,tid=0x16f0] Handle Children.
2010-04-30 12:17:00.163 [pid=0x474,tid=0x16f0] {D8896631-B747-47a7-84A6-C155337F3BC8}
2010-04-30 12:17:00.163 [pid=0x474,tid=0x16f0] Starting class <TaskV2> - Defrag System Volumes.
2010-04-30 12:17:00.163 [pid=0x474,tid=0x16f0] Properties handled. [ hr = 0x80070057 "The parameter is incorrect." ]
2010-04-30 12:17:00.163 [pid=0x474,tid=0x16f0] Error suppressed. [ hr = 0x80070057 "The parameter is incorrect." ]
2010-04-30 12:17:00.163 [pid=0x474,tid=0x16f0] Completed class <TaskV2> - Defrag System Volumes.
2010-04-30 12:17:00.163 [pid=0x474,tid=0x16f0] Completed class <ScheduledTasks>.
2010-04-30 12:17:00.163 [pid=0x474,tid=0x16f0] Completed package execution.

I have been unable to figure out the problem so far, and have not found much information online. Any insite would help. Has anyone else seen these types of problems?