[R] Mixdist producing Na's and NaN's

[Etienne B. Racine]

When using mix() form the mixdist package, I sometimes get NA's and NaN's in
the Standard Errors estimates. I've understood from the code that mix() it
is using Non-linear minimization (nlm) to estimate thoses errors, but I
can't understand how to interpret theses results. Does any one have a (web)
reference to suggest or an interpretation ?

Thanks,
Etienne
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