diff --git a/test/regression/db.zip b/test/regression/db.zip
index dba293e78..75477594b 100644
Binary files a/test/regression/db.zip and b/test/regression/db.zip differ
diff --git a/test/regression/gen_db.py b/test/regression/gen_db.py
index 17fe28725..7eaabd08c 100644
--- a/test/regression/gen_db.py
+++ b/test/regression/gen_db.py
@@ -87,7 +87,7 @@ def process_dir(d, outfile, file_filter):
                 outf = os.path.join(os.getcwd(), settings.database_name,
                     utils.hashing(fullp, pp))
 
-                cmd = [utils.assimp_bin_path,"dump",fullp,outf,"-b","-s",pp]
+                cmd = [utils.assimp_bin_path,"dump",fullp,outf,"-b","-s","-l",pp]
                 outfile.write("assimp dump "+"-"*80+"\n")
                 outfile.flush()
                 if subprocess.call(cmd, stdout=outfile, stderr=outfile, shell=False):
diff --git a/test/regression/settings.py b/test/regression/settings.py
index 53ec6bbc8..f3634f368 100644
--- a/test/regression/settings.py
+++ b/test/regression/settings.py
@@ -64,6 +64,7 @@ exclude_extensions = [".lws",".assbin",".assxml",".txt",".jpeg",".jpg",".png",".
 # '-og -om'   :run optimize-scenegraph in combination with optimize-meshes.
 # '-vds -jiv' :join-identical-vertices alone. This is a hotspot where
 #              floating-point inaccuracies can cause severe damage.
+# '-ptv':      transform all meshes to world-space
 
 # As you can see, not all possible combinations of pp steps are covered - 
 # but at least each step is executed at least once on each model. 
@@ -71,7 +72,13 @@ exclude_extensions = [".lws",".assbin",".assxml",".txt",".jpeg",".jpg",".png",".
 pp_configs_to_test = [
     "-cfull",
     "-og -om -vds",
-    "-vds -jiv"
+    "-vds -jiv",
+    "-ptv -gsn -cts -db",
+
+    # this is especially important: if no failures are present with this 
+    # preset, the regression is most likely caused by the post
+    # processing pipeline.
+    ""
 ]
 # -------------------------------------------------------------------------------
 # Name of the regression database file to be used