Re: [R] Error in matrix (unlist(value, recursive = FALSE, use.names = FALSE), nrow = nr, : attempt to set an attribute on NULL

Hi Michael, thank you for your reply. I haved contacted the author of the package. Hopefully I could fix the error very soon ^ ^ -- View this message in context: http://r.789695.n4.nabble.com/Error-in-matrix-unlist-value-recursive-FALSE-use-names-FALSE-nrow-nr-attempt-to-set-an-attribute-on-L

[R] Error in matrix (unlist(value, recursive = FALSE, use.names = FALSE), nrow = nr, : attempt to set an attribute on NULL

I am using Donlp2 package to solve a non-linear problem, but there's an error I always meet: Error in matrix(unlist(value, recursive = FALSE, use.names = FALSE), nrow = nr, : attempt to set an attribute on NULL I have been suffering from this bug for a long time. I'll be very grateful if som