This question has been answered by Bruno17. See the first response.
what is you columns - setup?
and maybe also your formtabs, please
{
"formtabs":[
{
"MIGX_id":1,
"caption":"Information",
"print_before_tabs":"0",
"fields":[
{
"MIGX_id":1,
"field":"name",
"caption":"Nom",
"description":"",
"description_is_code":"0",
"inputTV":"",
"inputTVtype":"text",
"validation":"",
"configs":"",
"restrictive_condition":"",
"display":"",
"sourceFrom":"config",
"sources":"",
"inputOptionValues":"",
"default":"",
"useDefaultIfEmpty":"0",
"pos":1
}
],
"pos":1
}
],
"contextmenus":"",
"actionbuttons":"",
"columnbuttons":"",
"filters":"",
"extended":{
"migx_add":"catmenu",
"disable_add_item":"",
"add_items_directly":"",
"formcaption":"catmenu",
"update_win_title":"catmenu",
"win_id":"catmenu",
"maxRecords":"",
"addNewItemAt":"bottom",
"multiple_formtabs":"",
"multiple_formtabs_label":"",
"multiple_formtabs_field":"",
"multiple_formtabs_optionstext":"",
"multiple_formtabs_optionsvalue":"",
"actionbuttonsperrow":4,
"winbuttonslist":"",
"extrahandlers":"",
"filtersperrow":4,
"packageName":"",
"classname":"",
"task":"",
"getlistsort":"",
"getlistsortdir":"",
"sortconfig":"",
"gridpagesize":"",
"use_custom_prefix":"0",
"prefix":"",
"grid":"",
"gridload_mode":1,
"check_resid":1,
"check_resid_TV":"",
"join_alias":"",
"has_jointable":"yes",
"getlistwhere":"",
"joins":"",
"hooksnippets":"",
"cmpmaincaption":"",
"cmptabcaption":"",
"cmptabdescription":"",
"cmptabcontroller":"",
"winbuttons":"",
"onsubmitsuccess":"",
"submitparams":""
},
"columns":""
}"columns":""
you didn't setup any columns
"columns":""
you need to setup a column for the 'name' - field
maybe you named the field 'title' and not 'name' the first time.
'title' is the default - column, if nothing else was setup