I recently bought Finale v25, but I have owned COMB2 for a while. I have tried without success many times to make it work with Notion 5, with no luck. Anyways, I'm tired of trying. 

Anytime I load Finale, MainStage, Logic (i'm assuming anything that loads AU plugins), I get about 3-4 messages that reads:

ARIA Engine: Concert and Marching Band 2

Cannot find instrument bank file at /Applications/Garritan Concert and Marching Band 2/Banks/1Standard/CMB_STD.bank.xml

Do you want to uninstall this product?

Whether I click yes or no to the prompt, it displays the message 3-4 times and then goes away, and everything seems to work fine. It apparently isn't uninstalling anything, because it continues to prompt me about this every time I load one of the aforementioned programs. I have googled this error without any luck. I don't even have COMB 2 installed anymore, and there are no files resembling COMB on my hard drive. 

All I want is for these freaking error messages to go away without uninstalling Finale. I couldn't care less about COMB 2. 

Any ideas?

Edit:

I forgot to post my system specs. Mid 2015 MacBook Pro 15, MacOS 10.12.1.