Since the new expac, Blood of Luclin, went live, if you update eq2maps, you will crash when zoning into any house zone.
This also means you can't log in on any character in a house zone.
Currently this means not playing those toons (and staying out of player housing) or removing EQ2 maps
I happened to have an old copy of the eq2maps directory in my beta folder. I deleted the 'current' one and replaced it with the old copy and was able to play without issue.