I updated my Mint wallet to the 2.0.2 version, it synced, but I have not staked any MintCoins since June 10, 2017 & the wallet is really sluggish, unresponsive most of the time.
Is your wallet unlocked for minting? Are you sending coins from your staking address before it has a chance to mint?
Consider that coins must age at least 20 days before they can mint. If you minted on June 10th, that was just 9 days ago.