Stephen Lavelle-2 wrote:

It appears to run fine in release mode*, but crashes when debugged.

I don't know if you alredy figured it out, but I was having EXACTLY the same problem using boost::filesystem-1.37-mingw under Windows XP SP2 - Code::Blocks 8.02. After searching a lot I hit a forum post where another guy was having that problem and it resolved to a mix of debug/release libraries being used together. So I solved the problem in the following way: built boost again (as I'm using only filesystem I built filesystem and system libraries only, you can run a "bjam --show-libraries" so you get their name): bjam --with-system --with-filesystem debug and yet again: bjam --with-system --with-filesystem release this will output the libraries in the following path: ./bin.v2/libs/debug|release/link-static|threading-multi linked my project's debug target to the debug library created (i.e. libboost_filesystem-mgw34-mt-d-1_37.lib and libboost_system-mgw34-mt-d-1_37.lib)... same for release target... (libboost_system-mgw34-mt-1_37.lib and libboost_filesystem-mgw34-mt-1_37.lib) I hope it helps you or someone with the same problem. If you or someone else need further explanation, I'll be glad to help. Patuti