There's no fix I'm aware of yet. Other than the one @tvoverbeek posted, starting fresh with the new NOOBS as of 2015-09-24, or simply installing the Raspbian onto an SD card and using that.
I don't know enough about how NOOBS works to know if it's even possible to fix already setup cards, and unless you absolutely need NOOBS for multi-boot I'd suggest backing up your files and installing Raspbian Jessie to stay ahead of the curve- major updates have a tendency of breaking more than they fix.