So I'm running the master Gantry template however I'm constantly hitting the following PHP notice in my error log - like 20/30 times a day: PHP Notice: Undefined property: Gantry::$belatedPNG in /JROOT/libraries/gantry/features/belatedpng.php on line 44 (where obviously I've substituted JROOT in for my actual path). However I can't see it on all the pages on my site - so I'm wondering if it's bot's crawling onto a non-html page (I noticed before there was a gantry error when viewing feeds for example that I fixed).

Now Gantry don't offer free support as I'm aware (and it's just a personal site so I'm not gonna spend $'s on it) so I was wondering if anyone had come across this problem before or knew of any way to fix it.