We have recently inegrated with RingCentral. Something they neglected to mention during our Demo was that Salesforce Lightning does not support screen pop's in a separate browser. Is there anything that can be done from a developer end to fix this? 

error in challenge 8.unable to import data 

There is problem with my  developer org. A code which is just a copy paste of the code provided in trailhead: Quick start Apex: Add a method to the class. (https://developer.salesforce.com/trailhead/project/quickstart-apex/quickstart-apex-2) is not getting saved.

However we tried this code in my friends org, it got saved and she got the points.

I'm doing the simple lightning components challenge and have hit this problem in my existing trailhead org and a brand new dev org that I've just created:

Challenge not yet complete... here's what's wrong: 
There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: QVWBQHAG