IIRC, Albert was unhappy with his theory, in that he did not like the prediction of singularity (black holes):
http://www.pbs.org/wgbh/nova/physics...eins-mind.html
Einstein Didn't Grok His Own Revolution
He thought black holes and quantum mechanics were too weird to be true.
http://discovermagazine.com/2008/mar...own-revolution