Please help: Error r(2000) when running svy logistic

Hello,
I am using Stata/1C 12.0 and have been having some difficulty running svy logistic. I would greatly appreciate any help.

I am able to run the model no problem using:
svy: logistic outcome mode i.agecat gender i.edcat i.incomecat i.prov

however, when I add a propensity score as a covariate to my model, I get the following error:
svy: logistic outcome mode i.agecat gender i.edcat i.incomecat i.prov propscore
an error occurred when svy executed logistic
r(2000);

I've looked into this error, and confirmed that all my variables are numeric (not string) and also confirmed that the outcome is coded as 0,1.

I'm stuck. Any ideas?

Thanks in advance!
Marcella