ED-E stopped moving after 10mins of play tonight. After reading through the forums & not finding a solutions, i played around with ED-Es companion commands & got him moving & shooting again just like normal. Maybe other people can try & see if this works for them. Also the brackets around my crosshair have re-appeared when i point at my companions after this. This is what i did.

talk ED-E / companion commands
tell him "back up"
exit companion commands
talk ED-E / companion commands
tell him "be passive"
... after this he started moving & shooting again
talk ED-D / companion commands
tell him "be aggressive"
... after this my crosshair returned to normal when i looked at my companions.

i went through the process a couple times to c if i could break him, but he's still working.

Nice. I'll have to give this a shot. I don't really miss ED-E seeing as I have a high PER, so Rex is just fine for a mule. However, it would be nice to have him for his combat music.