Stage 3 Error

I am testing your plugin. I have both a CSV and XML file for testing.

In either case, on stage 3 of the process, when I populate the Post with fields (example, Post Title is {Product_Name[1]} ) then I Preview the post, the output has the following in front of each field:

Notice: Indirect modification of overloaded element of WP_Hook has no effect in (path) wp-content/object-cache.php on line 664

I am using a Studiopress Genesis Child Theme, Streamline Pro.

Thank you.