Slic3r 1.31.6 (mac) freezes at Preparing infill...

[paingod5150]

Slic3r 1.31.6-prusa3d
MacOS 10.12.1 (16B2555)

After I add any stl file over 6mb (specifically larger dragonlock tiles) Slic3r freezes at "Preparing infill..." and pegs my processors at 100%. The app remains responsive for a bit but if left alone eventually stops responding instead of finishing.

Smaller dragonlock files slice without issue.

Cura works fine for slicing the same stl files but I am getting top surface issues I hoped "Ensure vertical shell thickness"
FDG0165U_DLU_Floor_4x4.stl.zip
config.ini.zip

would resolve but the freeze happens even before I select that option. Additionally it freezes Preparing infill even when infill is set to 0%.
config.ini.zip
FDG0165U_DLU_Floor_4x4.stl.zip

[paingod5150]

Additional report with the same files from another user. Its the STL + Slic3r. Cura continues to print them.

[bubnikv]

Thanks, I can reproduce the issue.

[DrLex0]

I have the same problem with a 33MB lithophane (generated by tweaking the customizable one in Thingiverse so it outputs a 256x256 pixel resolution), this does not occur in Slic3r 1.2.9.

[rob5standingby]

Experiencing the same issue here on my 2016 Retina MacBook Pro.

Software: Slic3r 1.31.6-prusa3d
OS: macOS 10.12.2 (16C67)

Thanks for looking into it!

[bubnikv]

This issue seems to be fixed by 17db5bf
as well.