Thank you for the quick reaction! The particle node itself seems to work fine, though I had been similar crashes when trying to plug in a color node into the color input.
############################################################################################ ERROR in action number 1 of Step Event0 for object o_main: Data structure with index does not exist.############################################################################################ gml_Script_gradient_eval (line 42) gml_Script_draw___part_gml_GlobalScript___VFX (line 151) gml_Script_render_Node_Particle_gml_GlobalScript_node_particle (line 62) gml_Script_anon_Node_VFX_Spawner_Base_gml_GlobalScript__node_VFX_spawner_9478577_Node_VFX_Spawner_Base_gml_GlobalScript__node_VFX_spawner (line 269) gml_Script_reset_Node_VFX_Spawner_Base_gml_GlobalScript__node_VFX_spawner (line 230) gml_Script_anon_Node_Particle_gml_GlobalScript_node_particle_966295_Node_Particle_gml_GlobalScript_node_particle (line 32) gml_Script_anon_Node_VFX_Spawner_Base_gml_GlobalScript__node_VFX_spawner_10053578_Node_VFX_Spawner_Base_gml_GlobalScript__node_VFX_spawner (line 294) gml_Object_o_main_Step_0 (line 7)
It works fine with plugging in an actual gradient node, so it probably is confused if there is just a plain color node instead.