MySQL error: Incorrect key file for table 'ar/folders/zz/zyxvpxvq6csfxvn_n000009800002_/T/#sql43_1_1bb3.MYI'; try to repair it (1 reply)

Hi MySQL experts,
I'm using Sequel Pro 1.1.2 Build 4541 (602e11a). I added two columns using a stored procedure by doing mathematical operations on a column in the same table as well as on a column in another table. I was able to produce the new columns, but after the query finished running, an error message came up:

"Last Error Message
Incorrect key file for table 'ar/folders/zz/zyxvpxvq6csfxvn_n000009800002_/T/#sql43_1_1bb3.MYI'; try to repair it"

Can someone please offer guidance on how I can repair it?

Thank you in advance.
Lee.