I am trying to write an external library that uses opencv. I am using os x 10.4.9 and Pd extended 0.3.9. To display images and movies opencv uses a call to a window. I have a standalone terminal program that call the window and displays the image correctly. When I try to call a window from within Pd I get a window followed by a long stall and eventually a crash. On my dock I get a second Pd app with no icon like when I open a Gemwin in Gem. The original app seems responsive but the second app seems to be in a "I want to crash state" untill it does. Does anyone how I can figure out what is happening here? Is it a lib that Pd is lacking? What is the best way to bugtrack this? I know that Pd knows where the opencv libs are at because other opencv functions work flawlessly. Thanks for any input. Alain