Hi again! I went further with the help of a friend..We compiled and installed flext (latest from SVN), so far no errors, everything was ok. Then we compiled and installed pool (latest from SVN) surprisingly without errors! pool.pd_linux is as expected in the pd/extra folder, but when I create the pool object, pd freezes. How can we find out where our mistake is ? The config-lnx-pd-gcc.txt looks correctly configured... Is there a log file somewhere that could help ? Many thanx for your hints. Delphine