Dear Tim, sorry to upset you. I did not understand your reply. I searched my computer for wxWidget - did not find any dll, just an xml. I looked at the xml with vim and could not find zlib. I remain unclear what else to look for/check. As for the downloaded install, I got it from sourceforge and it auto unpacked and executed fine (as far as I can tell). That was before running, obviously, and hence before c::b said it could not find zlib1 (which I assume has something to do with zipped files). I have also tried running the c::b executable directly instead of "executing" a .cbp file - it fails with the same can`t find zlib1.dll message as soon as I try to do anything.