End points are indeed down for several of our apps. Certainly an error on google's side. Got to wait.
Worked till we refreshed the browser page today!
Error noted from Chrome's JavaScript Console:
GET https://_____.appspot.com/_ah/api/static/proxy.html?jsh=m%3B%2F_%2Fscsâ¦L3eu8s_uMxLg#parent=http%3A%2F%2F_____.appspot.com&rpctoken=689483000 404 (Not Found) cb=gapi.loaded_0:116
Refused to display 'https://_____.appspot.com/_ah/api/static/proxy.html?jsh=m%3B%2F_%2Fscsâ¦L3eu8s_uMxLg#parent=http%3A%2F%2F_____.appspot.com&rpctoken=689483000' in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'. about:blank:1
GET https://_____.appspot.com/_ah/api/static/proxy.html?jsh=m%3B%2F_%2Fscsâ¦L3eu8s_uMxLg#parent=http%3A%2F%2F_____.appspot.com&rpctoken=401828000 404 (Not Found) cb=gapi.loaded_0:116
Refused to display 'https://_____.appspot.com/_ah/api/static/proxy.html?jsh=m%3B%2F_%2Fscsâ¦L3eu8s_uMxLg#parent=http%3A%2F%2F_____.appspot.com&rpctoken=401828000' in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'. about:blank:1
Update (somebody is apparently working on it), the error has changed to:
Invalid gadgets.rpc token. 429366340 vs 703741727 cb=gapi.loaded_0:41
c cb=gapi.loaded_0:41
_.Mb._.sa cb=gapi.loaded_0:41
h cb=gapi.loaded_0:59
c cb=gapi.loaded_0:52
Uncaught Error: m`apiproxy0e30dfc60185e9bebed936e8008c20776b338f810.6918280611280352 cb=gapi.loaded_0:71
_.T.Ca.Mm cb=gapi.loaded_0:71
h cb=gapi.loaded_0:59
c