While Ed is examining a piece of cloth with a magnifier, he flips the magnifier over from shot to shot (apparently to create a magnified eyeball in the initial shot). Because the magnifier's case is open on one side, the flipping is quite obvious.
After dinner, Tree leaves the table and you can see Nina's wine glass is still 1/3 full. In the next angle, she is seen refilling an empty glass.
Before showing Nina the video tape, Jeff shows her a tape with labels pulled off the top and from the spine, leaving torn labels. When he inserts the tape into the VCR, it is a different and clean tape, now with a clear label on the spine marked "Gary Gramm".
When Jeff is writing about his agent putting his eye to the wall (before the drilling), the word examine is misspelled as examen.