further to this message.. I tried the lastest svn "trunk" release of ccl (which incidentally looks like it has some extra goodies in it for the mac platform).. Here is what I get (after startup).. Welcome to Clozure Common Lisp Version 1.5-dev-r13523M-trunk (DarwinX8664)! ? (require :cl-opengl) Trace/BPT trap All other require packages got loaded successfully on startup prior. I played around with "trace" and "step" but none of those debugging functions seem to give me the equivalent of a "stack trace' in C. Not sure how to proceed to find out where it is crashing... Thanks, Kevin On Sun, Aug 1, 2010 at 6:04 PM, Kevin Smith <k2msmith@gmail.com> wrote:

The only hurdle for me for trying out (and maybe switching) to clozure on the mac platform is that I can't seem to get the cl-opengl package loaded. I get the error: "Trace/BPT trap" when I try to load that package. (All other dependent packages like cffi, loaded successfully).

I am using ccl64, version 1.5 on Darwin/MAC OS (DarwinX8664). Latest version of cl-opengl.

I believe I also tried it on the 32-bit ccl. Same problem. It looks like it only compiles a few source files in the cl-opengl package before it dies.

If someone can point out to me how I can trace this to provide more information on where it is crashing or maybe someone has run across this already with this particular package.

Thanks, Kevin