How do deal with recalibration errors

Due to changes to the CalibratR package, some of the recalibration methods don't work properly on some systems.  This is due to the way CalibratR is addressing the parallel package, which Mac OS (and maybe others????) doesn't seem to like.  There is a workaround, though; just copy the following code and run it before you run enmtools.calibrate, and all should be well!

if (Sys.getenv("RSTUDIO") == "1" && !nzchar(Sys.getenv("RSTUDIO_TERM")) && Sys.info()["sysname"] == "Darwin" && getRversion() >= "4.0.0") {

    parallel:::setDefaultClusterOptions(setup_strategy = "sequential")

}