During a Fox Four site update sometime ago, three of the Fox Four Korean campaign download files inadvertently had a 'thumbs.db' file included.  This file can in some rare instances cause the self-extractor (auto-install) file to stall or hangup. 

I have just replaced those files with new versions.  So if you have experienced the problem described above, it has been corrected. 

ONLY THREE DOWNLOADS were involved, the P1, C1 and C4 packs.

http://www.simviation.com/lair/cfs2korea.htm