Key Signature and Accidentals

I haven't been through everything with a fine toothed comb but my students and I found several errors in parts today.

The initial key signature didn't carry over from the score to any of the parts.

Accidentals are not carrying over in all parts. Example:
Vibe 1 and Vibe 2 m27. C natural in score doesn't show up in the individual parts.

I am unsure how to get this to correct.