I can confirm this as well. Had a couple of different coins on mintpal and the account did not show up/migrate over to their version 2.
They did in fact rectify that.
I did do a test Karma coin transfer back to my wallet and although it is showing up on their system as confirmed, it was not received. Forgive me while I go quickly look into that.
I'm sorry to hear your problem.
It is the same that happened to me last Wednesday.
I've seen some people use Twitter with some success.
The exchange is having major problems.
+1
mintpal has been having major problems since the launch of V2... please everybody, when using any new service, make sure you test your deposits and withdrawals with small amounts of coins BEFORE sending large amounts of coins.
+1
And keep the coins in your wallets.