The message “You are in shapshift form” is from the line of code bellow
/console autounshift 0
/cast Regrowth
/console autounshift 1
This is the code to fire regrowth without shifting you out of cat form so when it hits that line of code and you dont have Predatory Swiftness up (which allows you to cast regrowth in cat form) it does not allow you to shapeshift and thus cant cast regrowth because you are in shapeshift form. You can take the line out but then you are stuck trying to do it manually. I have error sound off so I dont here it and the text is a minor anoyance for the free heals.