Mail - Internet Accounts Problem
Keep getting a popup asking to enter my gmail password in Internet Accounts but the password popup window only shows a spinning wheel. Deleting the account and re-entering it fixes the issue for a day then it comes back. This has only happening with my iMac, it didn't happen on my Macbook Pro... no spinning wheel... was able to enter password which fixed it there. Gmail support pointed me back to a Mac Mail issue so now I'm stuck... been trying to find a solution for a month.
Any help or suggestions would be appreciated.
iMac (27-inch, Late 2012), OS X Yosemite (10.10.4)