Can't login to wpmudev dashboard

Hello, when I try to login within my wordpress site to the wmpudev dashboard, I get the following error message.

Your server had a problem connecting to WPMU DEV: "Error unserializing remote response.". Please try again.

If this problem continues, please contact your host with this error message and ask:

"Is php on my server properly configured to be able to contact with a POST HTTP request via fsockopen or CURL?"