IN THE OPTIMIZATION, ONE OR MORE LOGIT THRESHOLDS APPROACHED AND WERE SET AT THE EXTREME VALUES.
I used random starting values (not specified by the user) and also increased the MITERATIONS, but still receive the above message. I get the message when fitting a 3 or 4 class model but not a 2 class.
1) Is there anything I can do to avoid the extreme value?
2) If I get extreme values does that invalidate the mixture model results?