--- ImageMagick-6.6.7-8/magick/property.c.orig	2010-12-24 14:44:32.000000000 +0100
+++ ImageMagick-6.6.7-8/magick/property.c	2011-02-21 15:09:40.008402000 +0100
@@ -2012,9 +2012,14 @@ MagickExport const char *GetImagePropert
         {
           if (GetEXIFProperty(image,property) != MagickFalse)
             {
-              p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
-                image->properties,property);
-              return(p);
+	      // FIXME: GetEXIFProperty should have return MagickFalse, if it failed, no?
+	      // I see here a false positive of exif:Orientation, which exiftool does not see.
+	      if (image->properties)	
+		{
+		  p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
+		    image->properties,property);
+		  return(p);
+		}
             }
         }
       break;