GWAS worker hangs on macOS 10.13

[legaultmarc]

It is hard to troubleshoot the problem, but the GWAS worker process hangs when accessing results from the "fitted" object in the results handler for linear regression.

Specifically, the following line hangs:

"r_squared_adj": fitted.rsquared_adj

My environment looks like this:

• macOS 10.13
• Python 3.6.3
• numpy 1.13.3
• pandas 0.20.3
• geneparse #75983
• genetest #10278

Also, when the GWAS worker process crashes, a "Python quit unexpectedly." alert pops up and in the "Console" app, the "kernel" process logs "Process[56447] crashed: Python. Too many corpses being created.".

[legaultmarc]

When using anaconda instead, everything works...