After a couple of hours of intensive rebuilds, here's the result of the regression test :) Code: 653c7e7dcaf7ebee2cfc8a6e356779dc8974aac6 is first bad commit commit 653c7e7dcaf7ebee2cfc8a6e356779dc8974aac6 Author: David Adam <david.adam.cnrs@xxxxxxxxx> Date: Sun Apr 27 12:10:32 2008 +0200 amstream: Fix the condition of existence of the IMediaStream interface. :040000 040000 93801c98208e6fd29aff759a12bbee6b02241de9 339a6b671e82ef9c29cb5627b7b2d24ef26f8df1 M dlls I've done my test with wine-0.9.59 as start, and wine-1.0rc1 as end