Marketpress - longstanding site errors

I've been having quite a significant amount of problems on my site the past 6 months and unfortunately the only concrete data I have on errors points to marketpress.

I've posted before about a redirect loop that was crashing apache.

I now only have marketpress activated on a few subblogs rather than site wide.

Yet I'm still having problems and according to my developers, it's still something with marketpress.

I've got a file here that reveals all the errors apparently, it's massive and unfortunately I don't know how to read it. But they mentioned that it gives quite a bit of info for debugging.

Can someone please take a look?

Thanks, would hate not being able to use marketpress as it's a big part of my site.