I also have this problem and so I took a look at how the plugin was written. The problem is obviously associated with the fact that the author wrote this plugin to echo the values instead of returning them from the function.
I would hope that the author would update this plugin so that it will properly return the contents of the page instead of echoing it.
So, to everyone who’s racking their brain with what might not be compatible, don’t bother. The problem is this plugin, not some other one.
Hopefully the author will update this plugin soon as I just scanned through the support questions and there seem to be a lot of posts about this and for some reason he hasn’t responded to any of them.
