I/O Configurator 6 not working with custom user


We have removed the Default User permissions in a robotcell and created a custom user with the proper permissions.

When i'm logged in with a custom user and try to edit I/O signals with I/O Configurator 6 i get the error showed in the image.

However i'm able to change I/O signals with the default configuration in the "Controller" tab on robotstudio.