Call-time pass-by-reference

When the module is activated, a white screen with this error message appears:

Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of [runtime function name](). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file in {redacted}/sites/all/modules/wordpress_import/wordpress_import.module on line 663

A copy of this message appears immediately below, and then two more referring to line 664.

I was able to get back into administration, but the errors still appeared over the header.

This is regarding the Oct 26 dev snapshot.