Myetherwallet Not showing my balance but blockchainexplorer yes...

Hello,

I decided to transfert few ethers from this wallet:
https://etherscan.io/address/0x3856e4b439d1223df9faf8b171c43c9379bc0861

To my poloniex account and set my wallet adress for mining to my poloniex adress too.

When i connect to Myetherwallet i can t see my balance so i can't send my ethers.



Is it related to the fork? Do i have to do something ?
Is there another way to send the ether from that wallet ?

Thanks you very much people !