--- a/library_lookup.xml	Fri Sep 19 16:14:58 2014 +0200
+++ b/library_lookup.xml	Thu Nov 06 16:14:44 2014 +0100
@@ -13,16 +13,23 @@
     $regression.model	
   </command>
   <inputs>
+  <!-- Regarding the <page> items: this blocks the use of this tool in Galaxy workflows. However, 
+       alternatives like wrapping this in conditionals, repeats (to force a refresh_on_change as this option 
+       is not working on its own) failed since the workflow editor does not support refreshes...not does the 
+       workflow runtime support conditionals or repeats to be set at runtime. See also 
+       galaxy-dev mail thread "when else" in <conditional> ? RE: refresh_on_change : is this a valid attribute? Any other ideas/options??"  -->
     <page>
       <param format="tabular" name="input" type="data" label="NIST identifications as tabular file" 
       		 help="Select a tab delimited NIST metabolite identifications file (converted from PDF)" />
       <param name="library_file" type="select" label="CAS x RI Library file" 
       		 help="Select a library/lookup file containing RI values for CAS numbers on various chromatography columns " 
       		 dynamic_options='get_directory_files("tool-data/shared/PRIMS-metabolomics/RI_DB_libraries")'/>
+    </page>
+    <page>
       <param name="col_type" type="select" label="Select column type" refresh_on_change="true"
 	         display="radio" dynamic_options='get_column_type(library_file)'
 	         help="" />
-    </page>
+	</page>
     <page>
       <param name="polarity" type="select" label="Select polarity" refresh_on_change="true"
              display="radio" dynamic_options='filter_column(library_file,col_type)'