The first thing I see is that your build game screen shot shows 4+ GB of memory being used to build the game. The amount of memory being used is quite high, and you should consider doing some stuff in your level to get that to drop (such as turning dynamic entities static, turning physics off, etc.).
I also noticed you have 2 programs open that are not related to FPSC, and open programs take precious memory that could be used for FPCS during the build. Have you tried closing all non-FPSC programs and then building?
Priest of the Church of Joe Wood
In memory of Nanee. 9/1/1993 - 5/16/2009. Rest in Peace, little girl.