I think I found a mistake in the uploaded lxf files from December 2013 and February 2013. I'm not sure who I should talk to. However, two different sets have the same lxf file.
I recently tried to download the lxf file for 40054 Summer Scene - Theme: Seasonal, as posted by Stephan. However, the lxf file used is the one for {Summer Scene} - Theme: Lego Club build, which Stephan also posted.
I appologize if I was supposed to pm this problem, but I just joined and I was unsure who to send the problem to and how to send it privately.