Update Invalid Coupon Error Message

I'd like to find this line:

"Coupon code not found. Please try again."

and change it. However I've looked around in different files and I can't seem to find this in language files or in VirtueMart files anywhere. A clue on where this line is would be great. The reason I"m changing it is because even when the coupon is valid but expired it's still the same error. I just want to try to change it to:

Coupon code not found. It is either invalid or expired. Please try again"

Thanks
-Chad

Hi Chad,

It is in the language files. Look for PHPSHOP_COUPON_CODE_INVALID.