# Trouble with initial use of rstan

**URL:** <https://discourse.mc-stan.org/t/trouble-with-initial-use-of-rstan/11858>\
**Category:** Interfaces\
**Tags:** rstan\
**Created:** [November 11, 2019, 7:24pm UTC](https://discourse.mc-stan.org/t/trouble-with-initial-use-of-rstan/11858 "2019-11-11T19:24:11Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![stevebronder](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/stevebronder/32/17242_2.png) [@stevebronder](https://discourse.mc-stan.org/u/stevebronder)\
**Post date:** [November 11, 2019, 7:32pm UTC](https://discourse.mc-stan.org/t/trouble-with-initial-use-of-rstan/11858/2 "2019-11-11T19:32:36Z")

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See below for issues with catalina

> [@Dealing with Catalina II](https://discourse.mc-stan.org/t/dealing-with-catalina-ii/11802):
>
> If you have Catalina and clang++ installed from @coatless’s installer and rstan is not working, try the newest installer from

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