Cannot sort using unknown attribute TaskIndex

Discussion created by aed8d0c0bfe559cc5d463205b56e7056 on Mar 17, 2015
Latest reply on Mar 17, 2015 by John_Streeter
I've been getting this error as of today when attempting to expand items in the Portfolio list view or viewing the children of a portfolio item in the Beta pages.  Was this an introduced bug? It's really hurting us :(