A new version of R/qtl (1.46-2) has been released at its website (
http://rqtl.org) and will be on CRAN in the next day or two.
There
is a small bug fix related to parallel MQM permutations, plus a change
related to an upcoming change in R 4.0 (to be released in April), in
which the default for stringsAsFactors will be changed from TRUE to
FALSE.
For a list of the changes, see
https://github.com/kbroman/qtl/blob/master/NEWS.mdKarl Broman