Hey Noel, thanks for your reply.
I have already created a "new" chord sheet and had the same result (freezes when the style is loaded and hitting "play").

I've also "returned to factory settings with same result.

The original SGU songfile was sent to the support team 3 weeks ago and they said they couldn't replicate the issue (which is why I thought maybe the style itself was corrupt).
I have since emailed them again without any replies.

This is driving me crazy and I really need this style to work.