Not all platforms support all of Unity's features. For example, if you open one of the MovieTexture actions at the top you'll see:
#if !(UNITY_IPHONE || UNITY_ANDROID || UNITY_FLASH || UNITY_PS3 || UNITY_BLACKBERRY || UNITY_WP8)
This means MovieTexture is not supported on those platforms. As platforms are released we add them to the list if they don't support those features.
It sounds like Unity Vita does not support MovieTextures. I believe the Vita platform define is UNITY_PSP2. You could try adding this to the list, or the quicker test would be to delete any actions that are not compatible with Vita.
We're not registered Vita developers yet, but we have beta testers using Playmaker on Vita, so we should be able to get this working for you...