Had the same problem earlier today but it has since resolved itself for me. Win7 BOINC 7.6.9 Firefox 41.0.0
First noticed a problem while trying to update stats. Got message in event log: error receiving data from peer.
All of the following would direct me to ww2.enigmaathome.net/?folio=7POYGN0G2: (ww2 is not a typo) where it said domain name had expired.
(1) Bookmark in Firefox 41.0.0
(2) Firefox browsing history links for multiple pages at the site
(3) Google search for the Enigma project
(4) Status scheduler link on this website
Rebooted computer...no change. Tried to reset project via BOINC Mgr....hung on resetting project for 10 minutes or so...gave up.
Detached from project...successful. Tried to re-attach....project unavailable.
All the while had no problems with my Win 8.1 box.
Ran scans from Malwarebytes, SuperAntiSpyware, and Panda Global Protection 2016 Antivirus. Thought it may have been a Windows problem. All came back clean.
Half hour later began to experience the same problems on the 8.1 box.
Went to look for a very large hammer and began to brandish it at both machines. This threat of violence seems to have done the trick because they have behaved right ever since. Even re-attached to the Win7 host with no problems. Hopefully with patience (or perhaps the threat of violence) the problem will resolve itself for you. I really cant say what the problem was...perhaps a server glitch at Enigma. Just don't know. But you are not alone.