Error from glmmTMB().

I am getting an error, that I have no idea what to do about, from glmmTMB():

library(glmmTMB)
fmla <- cbind(Dead, Alive) ~ (Trt + 0)/Dose + (Dose | Rep)
X    <- dget("X.txt")
fit  <- glmmTMB(fmla, data = X, family = betabinomial(link = "cloglog"),
                dispformula = ~1)

Error in optimHess(par.fixed, obj$fn, obj$gr) : 
  gradient in optim evaluated to length 1 not 16
In addition: There were 16 warnings (use warnings() to see them)

The warnings are all repetitions of

1: In nlminb(start = par, objective = fn, gradient = gr,  ... :
  NA/NaN function evaluation

The error sounds to me like something is amiss in the code.

Can anyone confirm/deny/suggest what I might do to get this call to 
glmmTMB() to run?

Thanks.

cheers,

Rolf Turner

P.S.  The data set is attached.

Honorary Research Fellow
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276

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