Hi there, I just bought the ning to buddypress plugin specifically for its ability to import the avatars, but it doesn't import them for me at this time.
The ning network is v3.0.
I've also tried the import with the ning members page set to publicly readable by everyone, but it still didn't import the avatars.
As I understand it your script uses the user's ning profile page to get the user's avatar. Here is a user's profile url from the ning csv export file (attached) to use as an example:
I suspect that the code of your plugin isn't grabbing the image name from the csv's listed profile url correctly.
What's interesting is if you put that url into a browser, it changes to this:
So maybe there's something new that ning has done with its profile pages for which you need to update your code?