Other mistake: As Xena and Gabrielle are walking along the river, the upper story of a modern A-frame house comes in and out of camera view in the upper-left corner.
Other mistake: When Callisto (in Xena's body) enters the cave hideout of Theodorus and his men, Theodorus assumes she's the real Xena. However, she walks in a Callisto-like way, indicating she isn't. Callisto's army never appears again either, not even after she becomes an immortal and a goddess. On her own in future episodes, Callisto still wears the same warlord outfit she wore when she led Theodorus and the army on village rampages.