fun_von_mises.stan missing

[ps2-2]

I just updated brms, first to 2.22.0 (from CRAN), and then 2.22.1 (from github), and in both cases subsequently received an error regarding a missing file when trying to fit a von Mises model:

In file(con, "r") : cannot open file '/Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/library/brms/chunks/fun_von_mises.stan': No such file or directory

Following my post on the Stan forums, it looks like this is probably related to the other issues here and here.

[paul-buerkner]

did you restart R after installing brms again? ps2-2 ***@***.***> schrieb am Di., 24. Sept. 2024, 21:49:

…

I just updated brms, first to 2.22.0 (from CRAN), and then 2.22.1 (from github), and in both cases subsequently received an error regarding a missing file when trying to fit a von Mises model: In file(con, "r") : cannot open file '/Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/library/brms/chunks/fun_von_mises.stan': No such file or directory Following my post on the Stan forums <https://discourse.mc-stan.org/t/missing-von-mises-distribution-in-brms-2-22-0/36714>, it looks like this is probably related to the other issues here <#1633> and here <#1678>. — Reply to this email directly, view it on GitHub <#1690>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADCW2AD5OBQHAJGL4BBWIWLZYG64NAVCNFSM6AAAAABOZAZIU6VHI2DSMVQWIX3LMV43ASLTON2WKOZSGU2DMMRVGAZDOOI> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[ps2-2]

Yep.

[paul-buerkner]

I take it that the following code errors for you?

library(brms)
dat <- data.frame(y = rnorm(10, 0, 0.1))
fit <- brm(y~1, data = dat, family = von_mises())

It does work for me and I cannot find any traces of fun_von_mises.stan in the brms code base. Perhaps you are having some old brms models loaded in your environment that cause this?

I suggest to uninstall brms in a fresh R session (without any objects loaded). Then restart R and install brms in a fresh R session again. After another restart there should really be nothing that would keep R from clinging to some old code.

[ps2-2]

No, that code runs fine. I'll follow your suggestions---thanks, and sorry to take up your time with something that looks like it isn't actually a bug. [Edit: Just to confirm that doing so resolves the error, and von Mises models are now fitting just fine.]

[paul-buerkner]

cool! :-)