I am experiencing a strange problem with R Snippets in KNIME 3.5.3 on a macOS (high sierra 10.13.4 (17E202)) system since switching to the newest R version 3.5. It seems to be there with every R Snippet I use that generates an output table, the system is not able to get back knime.out parameters and throws strange error messages. The first part using R does work so there does not seem to be a general R problem. Well yes I tried to reinstall R, I made sure I have RServe and Cairo up and running and I also tried starting RServe separately and I tried to use every variant of R Scripting there is. And yes I also installed XQuartz … It looks as if the KNIME R Snippets are expecting some meta variables or something that might not be there anymore with R 3.5. I am wondering if other macOS users also have this problem or if I have to look further into my configuration. m_008_problems_r350.knwf (35.8 KB)

This issue was fixed in R 3.5.1 and Rserve 1.8-6. To get that version of Rserve, you will need to install it via: install.packages('Rserve',,"http://rforge.net/",type="source")

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R Problems on macOS (high sierra) since R version 3.5

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mlauber71 July 5, 2018, 2:43pm 10

@thor mentioned something about this problem here: