Connect Object Explorer return Non-existent column error even the column can be find in the object

Summary:

Content (required):

Hi Guys,

I am trying to access the emails field from the Contact object explorer from Our customer Portal. But my script always returns "Non-existent column: Emails" even though my script is a simple select script. And as you guys can see in the screen shot, the "emails" field exist in Contact object.

Thank you guys so much for any help :)

Version (include the version you are using, if applicable):

22a

Code Snippet (add any code snippets that support your topic, if applicable):

select asset.id , contact.name from Asset where contact.emails ='[email protected]'