Thank you! Using the tips above, I played around with it a bit more including checking and unchecking the Do Not Store password option. I think that may have done it, as I unchecked it, stored the password, then rechecked it again and it worked without issue from the Task Scheduler. I also see that it ran the scheduled job correctly last night. Glad it's fixed...not sure why it broke in the first place, but I'll take the win. :)
Thanks @lburr and @AlexV !
