Hi, I am having one of those “it worked yesterday” issues. I am on High Sierra, I have a fresh build of Sublime Text 3, I have SublimeREPL, R-Box, SendCode and SendText loaded. I have the location of R properly specified in the SublimeREPL User Settings. I press command+shift+P, select SublimeREPL:R, and a functioning R console comes up (it will do arithmetic as expected). But, if I open an R File, and submit code, the footnote on the R Console switches to “R Extended,” as expected, but then I get the window “Cannot find REPL for ‘r’.” I have no idea how to troubleshoot this issue, R was working last week and there’s only been a reboot over the weekend. I’m only about 10 days into Sublime Text, be gentle…
Courage!