I've scoured the net for answers- but no luck: I opened Vegas 13 on my desktop and laptop last week and went to do a render. Much to my bewilderment, all my render templates are gone! Nothing. All my filters etc are disabled - but I don't see ANY templates.
This happened to myself many years ago. Resetting the program fixed problem.
Close the program (Movie Studio/Vegas) Hold down the CTRL + SHIFT keys at the same time AND ALSO AT THE SAME TIME double click program icon on Desktop to Boot program. Window will pop up. Select Delete all Cached Application Data and then press Yes. This will restore program to Factory Default Settings.