I know this is a silly thing to devote a thread to but I thought what the heck.

In every video transfer and as much as I know every theatrical presentation of the 35mm cut of the film, one frame is missing. (including all the SE's)

For those who don't know what I'm talking about...

missing frame causing a minor jump cut

With all expertise around these parts when it comes to film, why did this happen? Is it a leftover error from Lucas' panic cut? Was it a naked guy who suddenly showed up for this frame or was it a good old fashion error of the negative cutter? In the old transfers you can see splice glue between these frames.