Thank you for your suggestion, Smon. Unfortunately downgrading my R version resulted in the same problem.

I was able to run RTest successfully after installing Zorro and R in a Crossover environment. For whatever reason it's not possible to run the 64 bit version of Rterm.exe (tested in multiple 64 bit 'bottles' in Crossover), but the 32-bit version works fine.

BTW, a nice benefit of Crossover over Wine is that the visual appearance of Zorro is still fine after minimizing its window.

Grant

Last edited by Grant; 04/13/20 15:05.