st: xtlogit response _GetQuad

[Sylvia Korupp <sylvia.korupp@uni-erfurt.de>]

Dear Stata Users,
has anybody ever encountered this sort of error message? What is more, 
the xtlogit command worked just fine a few days ago. Now there's an 
error. I'm slightly puzzled.

. xi: xtlogit pc i.d10 i.agecat i.maristat i.d8r i.c14 i.region,
Fitting comparison model:
Iteration 0:   ...

unrecognized command:  _GetQuad
r(199);



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