gms_show_replace randomly crashes

Hi, when I try to add a custom login to my game, it boots correctly usually 2 or 3 times, but after that, every boot results in a crash.

I don't think it's the .scn file that's causing the problem, as it loads the customized login window fine on initial boot and 2nd boot usually, and then randomly stops working on subsequent boots until I remove the code, test the game, and then add the code back in.

Here's the error I get on 3rd and subsequent boots of the game:


___________________________________________
###########################################################
FATAL ERROR in
action number 1
of Create Event
for object obj_gms:

Unexpected token '['
at gml_Script_wle_parse_layout (line 303) - show_error("Unexpected token '['", global.__xwindow_error_type);
###########################################################
--------------------------------------------------------------------------------------------
stack frame is
gml_Script_wle_parse_layout (line 303)
called from - gml_Script_wle_load (line 35) - _ret = wle_parse_layout(str_layout, data_p, data_c, -1);
called from - gml_Script_gms_show_replace (line 6) - global.__xls_window = wle_load(argument1);
called from - gml_Object_obj_gms_CreateEvent_1 (line 15) - gms_show_replace(wt_login,'<constants>

Any help appreciated.