You have reverted to an older process version. This can be changed in the calibration section of the developer module. Just change the process version to 2012. If you have images in your catalog that were originally edited in an older process version Lightroom will honor that process version. You will probably want to move them to the newer version unless there is a specific reason you want to keep those images in the previous version. In most instances you will find that the newer process version is much improved.
