Index: /issm/trunk-jpl/m4/issm_options.m4
===================================================================
--- /issm/trunk-jpl/m4/issm_options.m4	(revision 19109)
+++ /issm/trunk-jpl/m4/issm_options.m4	(revision 19110)
@@ -312,7 +312,5 @@
 			AC_MSG_ERROR([Couldn't find mex... check your installation of matlab])
 	   fi
-	   if test "x$IS_WINDOWS" = "x" ; then
-			AC_MSG_ERROR([I'M PRETTY SURE THIS IS SUPPOSED TO BE WINDOWS...])
-	   fi
+
 		AM_CONDITIONAL([WINDOWS], [test x$IS_WINDOWS="xyes"])