I previously posted about this same problem, and received a response which was, at the time, extremely helpful, but that fix is not working anymore. below is a link to that original conversation:
http://www.phidot.org/forum/viewtopic.php?f=21&t=3309
I am working with the same script and the same capture history and size class data sets as previously. I have updated the precipitation data sets, and would like to run the same models as before as well as several new ones.
Now, 9 times out of 10 when I run a model I get the same old "error -- numerical convergence never reached" in my outfile. This happens with complex models, but also with the null model in which all parameters are held constant, and using the fix described at the link above works only in rare instances, most of the itme even when very similar models are used to define "initial", the model still fails. Survival ~ body size will always run, and survival ~ time will always run, and the null model will run if initial=S~size, but that's as far as I have been able to get, and I would like to be running many more models than this.
Things I have tried that did not work:
- the fix described at the link above
- going back to the original precipitation datasets and running the original models
- running the original models with the original data sets in R version 3.3.1 and 3.3.0
- re-installing R, Mark, and RMark
- restarting the computer
- running the models on two different computers
Any help would be appreciated.