Hello list, I'm migrating from 1.38 to 1.39. When building my program, I got an link error like this: LINK : fatal error LNK1104: cannot open file 'libboost_thread-vc90-mt-1_38.lib' I've set the correct include path and lib path for the IDE. And I've confirmed that - there's no items in the "Additional Dependendies" in the Liker section of the project properties dialog. - I've not introduced lib dependendies via #pragma lib directives. And it's a small program, mainly depends on boost and CGAL. I have also rebuilt all of the CGAL lib's with boost 1.39.0. I just cannot how the program depends, directly or indirectly, on libboost_thread-vc90-mt-1_38.lib. I'm using MS VS2008SP1 in Windows XP/SP1. I think ithis problem is of a general value, even though it doesn't have that much to do with boost itself. And I believe the boost guys will have an idea. Thanks for any information. B/Rgds Max