Solution for SublimeREPL: [WinError 6] The handle is invalid

TL;DR: Opening Sublime Text from the command line was the problem. Solve it by doing what George Mauer suggests here.

I’ve used RStudio for a little while, but as I couldn’t quite get used to it I followed this guide to try using R with Sublime Text 3.  Doing so I stumbled upon this error when trying to use the keyboard shortcuts to send code to the repl:

Traceback (most recent call last):
  File "C:\Program Files\Sublime Text 3\", line 543, in run_
    return, **args)
  File "---\AppData\Roaming\Sublime Text 3\Packages\SublimeREPL\", line 123, in run
    for rv in manager.find_repl(external_id):
  File "---\AppData\Roaming\Sublime Text 3\Packages\SublimeREPL\", line 437, in find_repl
    if not (rv.repl and rv.repl.is_alive()):
  File "---\AppData\Roaming\Sublime Text 3\Packages\SublimeREPL\repls\", line 185, in is_alive
    return self.popen.poll() is None
  File "X/", line 916, in poll
  File "X/", line 1131, in _internal_poll
OSError: [WinError 6] The handle is invalid

Issue #271 (SublimeREPL@Github) regarding this is still open at the time of writing, but I found the solution to my problem elsewhere. It turns out that opening Sublime Text from the command line is what caused the problem, and this solution by George Mauer on Stackoverflow solved it.

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