Approval errors in snippets and email templates

Hi there,

I've made changes to an existing email template and to an existing snippet. When trying to approve the drafts, I am getting "unexpected errors".

I've tried to clone the master email template and approving it, and that works. The same applies to the snippet.

Naturally, I don't want to clone the master email template to get a new version approved as I'd have to adjust all the emails who are using the template.

Are the template and snippet files corrupt? What can I do to fix this?

Thank you!