[R] Determining cause of error?

[rkevinburton at charter.net]

This is both a specific question and a general one. First, I am running 'fitdistr' from library(MASS) and I get the following:

Error in fitdistr(templist, "weibull") : optimization failed

What is the cause of the error? How can I tell? Can I just catch this error, report it and move to the next set of data (eat the exception)?

Thank you.

Kevin