Nuke Jobs Stalling

We’re getting this error and then tasks just hang for hours on ened:

2012-07-24 11:01:26: Scheduler Thread - Cancelling task because task filename “\sfs-file\repository5\jobs\006_050_004_018eb491\tasks\006_050_004_018eb491_00000_1336-1345.Rendering.Render-i7-06” could not be found
2012-07-24 11:01:26: Scheduler Thread - The task folder contains the correct number of tasks, which would mean the task had been requeued
2012-07-24 11:01:26: sending cancel task command to plugin
2012-07-24 11:01:27: 0: In the process of canceling current task: ignoring exception thrown by PluginLoader

They don’t actually cancel though. They just get stuck in perpetual rendering. Any ideas?

Actually that might be only when the job is getting suspended. Not the actual error. Too bad. It just reads out:

And then stops.

Solved it. Bug with Nuke. It was due to the render nodes not having Quicktime Installed. It was stalling when trying to load a .mov