After upgrading from 2.1 to 2.1.1 I no longer have access to view my library in the playlist builder. The "Processing..." popup remains present, and in the Chrome console I receive:
Did you have any luck with this problem? The changes in 2.1.1 should not have caused this issue, and we haven't heard anyone else having this problem either.
Just out of curiosity what is your OS? Is it Ubuntu or some other OS (Debian)?