key error raised using modelformset inside a wizardform

hello everybody! ^-^ i'm dealing with this: Environment: Request Method: GET Request URL: http://localhost:8000/alta_socies/proces_alta_projecte_autoocupat/adreces/ Django Version: 1.7.7 Python Version: 2.7.9 Installed Applications: ('django.contrib.admin', 'django.contrib.auth', 'django.co

key error when using modelformsets inside a wizardform

hello everybody! i'm running in this error while using modelformsets inside a wizardform. Environment: Request Method: GET Request URL: http://localhost:8000/alta_socies/proces_alta_projecte_autoocupat/adreces/ Django Version: 1.7.7 Python Version: 2.7.9 Installed Applications: ('django.contr