qtl2 user guide genome-wide single-QTL scan DOex example error

[Mark Sfeir]

I'm attaching a file with my essential .Rhistory commands that led to the below error that I can't explain while going through the user guide on Kbroman.org. 

I made successful use of the scan1snps() function in the part of the example with the DOex dataset where only a specific region in the genome is specified to the function around a site with a LOD peak, but when I try to use the function's ability to perform a genome-wide scan, I encountered this error:

Error in checkForRemoteErrors(val) :
  8 nodes produced errors; first error: object 'kinship_loco_do' not found

I know that the "8 nodes" part of the error message refers to the 8 cores I employed on my machine, but can't tell why the "kinship_loco_do" object—which I had just successfully used with the same function when doing a single_QTL scan on a defined region—is flagged as "not found" here. 

-Mark

[Karl Broman]

A similar error was reported before, but unfortunately I've not been able to reproduce or fix the problem.

    https://github.com/rqtl/qtl2/issues/177

What operating system on you on? What version of R and qtl2 are you using?

If you use cores=1, does it work?

karl

[Mark Sfeir]

That's good to know, and I am on Windows 10 Enterprise (64-bit OS, x64-based processor), using R version 4.1.3 (2022-03-10), and qtl2 version '0.28'.

When I ran the same command with cores=1, I did get the intended result. 

Thank you,

Mark