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I am adding a custom field in user profile configuration file but it's not display on registration page. i.e
I need a custom field here in profile page and i need to add it to a database that in mp_UserProperties or mp_Users.
I searched lot of forum and I tried it on my machine but it's not working for new field. if i use existing component then it's working but I need to rebuild the solution otherwise the it's not take effect of that.
I was able to copy what you posted into a profile config file and it worked fine. Are you sure you are editing the correct file? By default, the file is named mojoProfile.config and it is in the root of the mojoPortal installation. If you have set mojoProfileConfigFileName in your user.config or web.config, be sure to edit the file set with that setting.
Hope this helps,