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MCMC Error 0099

Posted: Wed Aug 04, 2010 6:51 am
by Maarten
Dear all,

I'm running a multinomial (5 categories) multilevel model. I've already added several covariates (individual level) and I didn't encounter any problems so far but when I add the last covariate, MLwiN shows me the following error:

"MCMC Error 0099: Prior Standard Deviation must be positive"

How can I fix this?