id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,cpu,platform 2667,r.mapcalculator in a loop generates C++ runtime error,lobelius,grass-dev@…,"Hello. I'm employing r.mapcalculator in a QGIS console loop as per the following line. The script works just fine. However, from time to time, subprocess sh.exe raises a Windows C++ Runtime popup error R6016, which stops the loop as long as user doesn't click the ok button (attached an example taken from internet). The loop itself just freezes up, but doesn't terminate. import processing for i in range (0,1000): processing.runalg('grass:r.mapcalculator',img1,img2,None,None,None,None,'A*B','-180,180,-90,90',0.25,imgout) Any clues? ",defect,closed,normal,6.4.6,Raster,6.4.3,invalid,QGIS python console,,x86-64,MSWindows 8