Hi, I am learning to use Boost library for the project. I used an example list at http://www.boost.org/libs/filesystem/example/simple_ls.cpp I ran it in Windows .NET environment. Compiling and linking were fine. When I ran the program, it gave me the following system exception message: An unhandled exception of type 'System.TypeLoadException' occurred in FileFinder.exe Additional information: Could not load type boost.filesystem.detail.dir_itr_imp from assembly FileFinder, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null. Can anyone tell me why? I appreciate it. Shee-J Hwong TECORE Wireless Systems Phone: +1 410 872 6000 ext. 309 Fax: +1 410 872 6010 email: hwong@tecore.com <mailto:hwong@tecore.com> THIS TRANSMISSION CONTAINS TECORE PROPRIETARY AND CONFIDENTIAL INFORMATION. This information is intended to be for the exclusive use of the individual or entity named above. If you are not the intended recipient, be advised that any disclosure, copying, distribution or other use of this information is strictly prohibited. If you have received this transmission in error, please notify us by telephone at 1-410-872-6000 or by email to <mailto:troutman@tecore.com> hwong@tecore.com immediately.