Hello, I'm new to Boost, and I searched for this problem, but could not find. When I first built Boost for Visual Studio 2010 (64-bit), I simply ran bjam.exe. I added the include and library paths as instructed and my simple test program, (the regex one on the Getting Started page) using Boost.Regex worked perfectly (Built and Ran). However, then when I ran bjam.exe with the following settings: Link=static,shared runtime-link=shared variant=debug,release threading=multi address-model=64 -a -q, it built successfully, but when I Built my VS2010 project, I started getting "unresolved external symbol" errors. Does anyone have a clue to why this is? Perhaps I need to change some settings in my Visual Studio mode? Maybe the first time, it just used static libraries without any problems, but this time it's having problems with the shared libraries? Any help would be appreciated! ________________________________ CONFIDENTIALITY WARNING: This email including any attachments may contain privileged or confidential information and is for the sole use of the intended recipient(s). Any unauthorized use or disclosure of this communication is prohibited. This e-mail may also be subject to specific non-disclosure and confidentiality provisions. The information contained herein is the property of Chopper Trading, LLC. If you believe that you have received this email in error, please notify the sender immediately and delete it from your system.