Session won't start unless I reboot


I was working on a project. I deleted by mistake the stereo out than I re added it from the studio connections. I closed it and saved a template out of it to mix all the CD tracks on that same template. Now each time I want to open the project or the template, cubase shuts down automatically after trying to load the project or template. I need to reboot the PC in order to be able to access it.

Any help?