Pretranslate task


I use Trados Studio 2021 SR1 -
If I let execute a pretranslate task like 

AutomaticTask pretranslateTask = fileP.RunAutomaticTask(

and some server or file based translation memories are linked with the project, I often get "Unexpected exception when configuring file multiFileConverter for task 'Pretranslate'" exceptions and that a TM couldn't be instantiated. If I start this task with only one sdlxliff file at the same time then everything is fine. Why are there problems with parallel execution?

Kind regards,
Andreas Meisel