I am experienced programmer and I have been learning Meteor. I have run through the basic tutorials a couple of times. A few months back I set up the basic todo app and installed the FB/GitHub etc auth packages, set up the secrets and no problem. All worked well. Away I went on learning more Meteor.
This time … not so good. I get the error in the topic line. “Error: Permission denied to access property “Package””
I have googled, poked around the forums and elsewhere. Any help would be appreciated.
Further clarification : I am using the popup login and the login through FB or Github seems to go just fine. The error is generated in end_of_popup_response.js line 18 which is
if (window.opener && window.opener.Package &&
Sorry for my lack of clarity. I can supply any other details and appreciate any assistance.
Maybe digging a big hole in my yard helped. 
I chased this for several days. Used several browsers Downloaded another browser today - and the error message changed slightly in the new browser.
Uncaught SecurityError: Blocked a frame with origin “http://localhost:3000” from accessing a frame with origin “http://127.0.0.1:3000”. Protocols, domains, and ports must match.
Solved.
My apologies to all for a time wasting post.
1 Like
Now to figure out how to mark it solved…