This is a pretty tough crash to debug. Look here for some tips, though:
http://www.ni.com/support/failure/commerr.htm
http://www.ni.com/support/failure/
Are you using ROBOLAB 1.0? If so, you could try downloading the 1.0 to 1.5 update from:
http://www.lego.com/eng/education/mindstorms/home.asp?pagename=download
I also wonder if this might be due to lack of memory. Do you have "enough" RAM?
http://www.medicollector.com