Other mistake: The guitar next to Rogue's bed has position markers on all of the odd-numbered frets, beginning with the first. Position markers on guitars start on the 3rd fret, and sequentially follow on the 5th, 7th, 9th, 12th, 15th, 17th, 19th, and 21st frets (and 24th where applicable).
Other mistake: In the English DVD subtitles Sebastian says, "In direct combat, they're is no warrior equal to the Red Series." "They're" should be "there". (00:24:00)
Other mistake: After they arrive in Marina Bay the pink ranger is wearing the red ranger's jacket.