You have put your query on wrong channel . This one is specific to Thingworx and your query seems to be related to another product. You can post the same to following path and one of our community member will definetly help you with proper solution.
Go to menu (on left corner) >> SLM >> Arbortext >> Arbortext .
If you don't see them there, it might be worth trying to repair your installation, or do a clean reinstall of Arbortext. When you (re)install, check to make sure any options for DITA 2.0 are selected for installation.