I have just done a full GIT update from Boost develop. (and bootstrap to rebuild b2.exe) When I try to recreate the headers or run any b2 run, I now get Performing configuration checks - default address-model : 32-bit - default architecture : x86 - symlinks supported : yes error: Cannot create link ..\..\..\boost\pending\detail\disjoint_sets.hpp to ..\..\graph\include\boost\pending\detail\disjoint_sets.hpp. error: Link previously defined to another file, ..\..\disjoint_sets\include\boost\pending\detail\disjoint_sets.hpp. I deleted all the bin.v2/libs files but this has no effect. I have deleted /disjoint_sets to get going again (as I not using either graph or disjoint_sets). What am I doing wrong? Paul --- Paul A. Bristow Prizet Farmhouse Kendal UK LA8 8AB +44 (0) 1539 561830