Hi, compiling ./Osi/OsiPresolve.cpp failed with the message: Compiling OsiPresolve.cpp OsiPresolve.cpp:913:53: missing terminating ' character changing routines from CoinPresolvePsdebug are found. I'm stumped. -- lh -- >> into routines from CoinPresolvePsdebug are found. I m stumped. -- lh -- >> fixes this problem.. greetings! sven