I found a workaround that may be helpful. Use at your own risk. We still have a BEX 2012 server in our environment so I grabbed the libcurl.dll from that server and replaced the one on the new server (after finding a safe place to keep a copy of the ...
I would be very grateful if you would share the final solution. I have having the exact same problem. I have logged a support case but would appreciate the extra feedback.