@Uncle-Frank
Thank you for your ideas. I couldn´t check the idea with the url so far. It is Fog Version 1.2.0. Some weeks ago I started a debug task for that client. See here: https://forums.fogproject.org/topic/5289/upload-task-error-no-resizable-partitions-found
But this debug task is not listed anymore. Is it possible, that the debug task is not completely closed? Maybe in the fog management console are some leftovers? How could I clean it completely?