1.8.3p1 has changed the defaults for the COPY and INSTALL Makefile macros on Windows from "cp" and "install" to "copy > nul" for both. This would be fine (and probably work better), except that a lot of extensions seem to end up providing paths delimited with a "/" to the COPY and/or INSTALL command, and "copy" on Windows doesn't handle it properly. For an example, try building and installing 'win32-semaphore' using 1.8.3p1. There may also be an issue with switches, such as '-m', provided to INSTALL, but I haven't researched it extensively. Thanks, -- Nathaniel <:((><