When a task cannot find the parsetfile argv[0].parset during the init-phase
the task no longer aborts, it just gives a debug-message in the logfile.
This is neccesary for the controlleris since the controllers need an observai-
tion-related (and instance-related) parsetfile that has the treeID and the
instanceNr mangled in its name. The controllers theirselves know which
parset file to open and do this in the constructor, so the task will still
abort if the right parset file can not be found.