*** Exception: toEnum{StopReason}: tag (-1) is outside of enumeration's range (0,6)

[alang9]

I get the following runtime error in ghc 7.0.3 and ghc 7.2.1

levmar (const (singleton 0)) Nothing (replicate 2 0) (singleton 0) 0 defaultOpts mempty
Right (fromList [0.0,0.0],*** Exception: toEnum{StopReason}: tag (-1) is outside of enumeration's range (0,6)

This appears to happen whenever the parameters vector has length 2 or greater

[alang9]

Rather, it appears to happen whenever the number of parameters exceeds the number of samples.

[basvandijk]

Thanks for the bug report!

I fixed it and released a new version.