where has my mouth_open file gone?

[rosanna]

I am trying to get a script with the .vzf avatars running under 2.17a which was running under 2.16b.

when I load it, I get an error message saying "warning morph does not exist: mouth_open".

So I looked at the .vzf files and there are open mouth morphs but they were generically named "morph". I've tried both renaming the correct morph as mouth_open and recreating the head and adding a new set of morphs with mouth_open as an option and nothing has worked.

Any ideas?

Thanks!