mcandrewji

Copy from: [mesh] ......... ......[cura] in my message and replace the contents of the cura.cfg file with that configuration information. Essentially what I did was removed any information relating to directories and files on my computer that the Cura 3.1 install copied from the older Cura 3.04. which is essentially the printer information and last file location accessed and any other path information that I found. One of these was causing the Cura 3.1 to crash. in particular it had to do with the printer set-up file information so after you get it working if you connect it to the old file configuration, which will still be available, it will crash again it is better to keep the old install and to cut and paste the information between versions as I was able to have them open concurrently. In Cura 3.1 it will ask you to create a new Printer set up when it starts as the editing I suggest will convince it that there is no previous set-up information available so it does a fresh start. The advantage is that it allows me to retain the older versions in a working state and still get the 3.1 to load properly, without having to uninstall/purge all previous versions and such. you have all the information you need in my previous posting.

I found something that worked for me. It seems Cura 3.1 does not like the Cura Config file form previous versions. I located it in the C:\Users\\AppData\Roaming\cura\3.1 directory and I edited it to the following: [mesh] [backend] [general] window_height = 1050 visible_settings = ;support_tower_diameter;machine_settings;cool_fan_full_layer;magic_spiralize;support_pattern;support_extruder_nr;travel;material_diameter;adhesion_extruder_nr;support_enable;material_flow;prime_tower_enable;print_sequence;support_type;support_top_distance;cool_fan_full_at_height;cool_fan_speed_0;support_interface_extruder_nr;material_print_temperature;blackmagic;material;material_bed_temperature;brim_width;infill_sparse_density;platform_adhesion;layer_0_z_overlap;acceleration_print;layer_height;support_bottom_distance;dual;cool_fan_speed_min;support_roof_extruder_nr;speed_travel;wall_thickness;adhesion_type;experimental;infill_pattern;retraction_enable;z_seam_y;raft_airgap;prime_tower_position_x;prime_tower_size;support_xy_distance_overhang;cool_fan_enabled;infill_mesh;support_use_towers;speed;meshfix;support;acceleration_travel;support_bottom_extruder_nr;support_angle;support_interface_density;support_z_distance;top_bottom_thickness;prime_tower_position_y;material_bed_temperature_layer_0;speed_print;z_seam_x;support_infill_rate;cooling;raft_surface_layers;infill;resolution;jerk_print;jerk_travel;shell latest_version_changelog_shown = 3.1.0 accepted_user_agreement = True window_state = 2 window_left = 606 window_width = 1470 window_top = 205 version = 5 [local_file] dialog_load_path = [gcodereader] [physics] [layerview] extruder_opacities = 1 [info] asked_send_slice_info = True send_slice_info = False [um3networkprinting] [view] [octoprint] [metadata] setting_version = 4 [cura] Saved it and for me the Cura 3.1 started to load properly I had to copy parameters from my original printer setup information but it is all good now so far maybe this will work for you also. good luck