We are currently informing the exchanges about the new wallet. Please wait with making transactions between new wallet and exchange until they will confirm that they updated their wallet versions on their exchanges.
Cheers! 
- Navajo Coin Development Team mmmm i have transferred all my coins from bittrex to the new wallet at the moment you posted the new wallet. you didnt mention then that we needed to wait !
coins arrived in new wallet fine though.
can i leave them there or should i take some action?
If they arrived then it's fine of course. We told that just in case, don't worry