Revealing mistake: We can see Ecliptor's zipper from behind - slightly revealing on Saban's part, considering Ecliptor is supposed to be an evil monster henchman of Astromena's.
Crystal Blue Persuasion - S3-E15
Factual error: When Frank, Olga and he rest of the Back Step Team meet Commander (a Navy O-5 Rank) William Streck, he is dressed in a U.S. Air Force Uniform with the rank of Colonel (O-6).
Continuity mistake: When Silver Surfer is engulfed by the Fractite, he is standing on the middle of his board with his left foot closest to the front (the "goofy" stance), knees slightly bent and arms extended to his side with his elbows slightly bent. In the next scene, he is shown to have both of his feet pointed towards the front of his board, with his knees bent more and his torso leaning back. The Fractite holds him in place, similar to if you were frozen in ice, so he wouldn't have been able to freely move.