Index: wflow-py/wflow/wf_DynamicFramework.py
===================================================================
diff -u -rb0268a64b8bf7f7d315774d3bea6fda7cb5f77d1 -r01eba5da1278c4a24e2c1e2ad33e67f9ea33bd34
--- wflow-py/wflow/wf_DynamicFramework.py	(.../wf_DynamicFramework.py)	(revision b0268a64b8bf7f7d315774d3bea6fda7cb5f77d1)
+++ wflow-py/wflow/wf_DynamicFramework.py	(.../wf_DynamicFramework.py)	(revision 01eba5da1278c4a24e2c1e2ad33e67f9ea33bd34)
@@ -692,7 +692,12 @@
                         theparmap = cover(theparmap, default)
                         newargs.append(theparmap)
 
-                rest = lookupscalar(pathtotbl, *newargs)
+                for lmap in newargs:
+                    if not os.path.exists(lmap):
+                        rest = spatial(scalar(default))
+                        self.logger.debug("map file not found (" + lmap + ") returning default value: " + str(default))
+                    else:
+                        rest = lookupscalar(pathtotbl, *newargs)
             else:
                 self.logger.debug("tbl file not found (" + pathtotbl + ") returning default value: " + str(default))
                 rest = spatial(scalar(default))