this patch fixed a bug in ParseGathererOracle. The regular expression of expansionPattern do not work correctly. It find not the "Expansion" value but the first "All Set" value which is in most cases valid but failed if more than one sets are available and the first value is not the expansion itself.
As an example if you select all three check boxes, "Alara Reborn" as Set and "Chinese Simplified" for the update process you will see that two cards are missing (Terminate/176449 and Meddling Mage/179547) after the update. In case of Terminate/176449 it found the expansion "Planeshift" which is the first in "All Set" value and not the expansion "Alara Reborn", same for Meddling Mage/179547.