Updated packages, brms has stopped working

I just updated a bunch of packages, including updating brms from 2.3.3 to 2.6. It now no longer runs correctly. If I begin to run a model I just get this and then it stops without running anything:


I don’t get any error.

Can you try

example(stan_model, run.dontrun = TRUE)

and tell us if there are more messages?

Thanks, here’s what I get:


I’m trying to update and reinstall rstan and Stanheaders and it seems to keep failing -

Installing rstan seems to remove it but not reinstall an updated version:


                  repos = NULL)

to install the rstan binary.

Thanks - I did that (it worked), but now I get this error when trying to load the brms package:

Entry Point Not Found
The procedure entry point R_ContinueUnwind could not be located in the dynamic link library

Crap, I gave you the version for R 3.5. Restart R and then try

                 repos = NULL)

Cool, thanks, that worked. If I upgrade to a different version of R do I have to reinstall a different version of Rstan? I don’t recall it being an issue with past installations.

In ordinary times, Windows will pick the binary version of the package that corresponds to the version of R that you are using.

Great, thanks again for your help.

I am having the exact same issue, but when I try to load rstan after installing using the script provided in this thread I get the following error

Error: package or namespace load failed for ‘rstan’:
package ‘rstan’ was installed by an R version with different internals; it needs to be reinstalled for use with this R version

Never mind, I restarted R and repeated the suggested procedure and it worked.