During the cinema scene the position of the dead Schlect agent changes between shots.
At 'The Rest' transport cafe the extra at the left/rear table (facing the counter) disappears when Eric falls on the floor.
Eric's scarlet uniform at the reception has no rank on the shoulders, despite him supposedly being a major. Mere epaulettes do not denote any rank.
Eric has a cinema ticket booked for Row E seat 4, but sits in the seat that is 5 in from both the left and the right aisles.
In the dinner scene Eric claims that the table leg is impeding him from sitting down, but if this was so then the same table leg would have prevented him from sliding upwards into his chair as he appears to do.
After Eric and Ernie enter the hotel room, a hand is seen catching the door as it closes.
When Eric and Ernie are practicing self-defense against a knife attack Ernie claims to be left-handed but it soon becomes apparent that he is in fact right-handed.