Am helping a grad student who got the error message:
Error in runHelper(model, frontendStart, intervals, silent, suppressWarnings, :
NLOPT fatal error -1
When I search on "NLOPT fatal error -1" on the site, the only thing I get is:
Rev 4444 and /trunk/ Rev 4445
which just gives code for writing ""NLOPT fatal error -1."
Anyway you can inform us mortals about what "NLOPT fatal error -1" means?
PS It would also be nice to give English outputs for "fatal error -2", -3, -4, etc.