I set up several renders for this past weekend and only 1 out of 6 files had rendered.  I double checked to make sure I had External Renderer selected in the Animation Render Options, and saved each .vue file.  When I opened the files again, the Internal Renderer option was selected!  Do I have to have the External Renderer checked for both still and animation render options?  Has anyone else had this problem?

I dont know, but make shure that its rendering to the disk. othe rwise its rendering to nothing.