[Plugin: SubHeading] is_main_query fatal error on wp prior to 3.3

Apparently, this could be of help:

https://gist.github.com/1297669#gistcomment-58619

Hi,

I will look into this in order to add some backwards compatibility in order to get it working on 3.2.1.

Thanks for highlighting the problem.

Hello again,

I have made some modifications and committed an update to the plugin, tagged as version 1.6.7.

Some brief testing was carried out with WP 3.2.1 and it seemed to work for me, give it a try and hopefully resolves your issue.

Thank you I’ll give a try as soon as I can