--- ode_c.c.orig 2009-08-13 04:02:43.000000000 +0200 +++ ode_c.c 2009-08-13 04:04:17.000000000 +0200 @@ -4308,7 +4308,7 @@ ocamlode_dPlaneSpace (value nv) { #if defined(MEM_CPY) // dSINGLE - CAMLparam1 (n); + CAMLparam1 (nv); CAMLlocal1 (rv); dVector3 n, p, q; dVector3_val (nv, n);