Our paper refers to Pater (to appear) for details on the "Hungarian" problem. Discussion of Hungarian was removed from Pater (to appear) before it went to press.

An anonymous reviewer for that paper pointed out that the data file for that problem (created by the first author) has missing violation marks for some constraints. The original grammar file can be found here. A revised grammar file can be found here. The distribution file can be found here.

The corrected problem still fails to be learned by the Praat version of the GLA. According to the anonymous source, the problem is solved by the OT-Soft version of the GLA. The OT-Soft version of the GLA does not solve the WLW problem, however.

Also, the definition of Agree-Back should not refer to roundness, but needs to exclude the front unrounded vowels as triggers in some other way, since back unrounded vowels are triggers.

Thanks to the anonymous reviewer for these observations.