$default_post = <<<'DEFAULT_POST'
<div itemscope itemtype='http://schema.org/VideoObject'>
<meta itemprop='name' content="%VideoTitle%"><meta itemprop='thumbnailURL' content='%VideoImage%'><meta itemprop='embedURL' content='%VideoUrl%'><meta itemprop='width' content='640'><meta itemprop='height' content='480'><meta itemprop='duration' content='%VideoDuration8601%'>
<p style='text-align:center;'>[embed width='640' height='480']%VideoUrl%[/embed]</p>
<p><span itemprop='description'>%VideoDescription%</span></p>
</div>
DEFAULT_POST;
The first line is the one throwing the error. I have this code running on 100s of sites but I have one customer who reports this error.
There is no whitespace after the nowdoc 'DEFAULT_POST'.
Customer states he is running PHP 5.3.29 (nowdoc introduced in 5.3.0).
So now I'm at a loss. Looking for other ideas on what this might be...