diff --git a/PROMS/VEPROMS.CSLA.Library/Extension/ROFSTExt.cs b/PROMS/VEPROMS.CSLA.Library/Extension/ROFSTExt.cs
index 7d2c0a78..71ab98d2 100644
--- a/PROMS/VEPROMS.CSLA.Library/Extension/ROFSTExt.cs
+++ b/PROMS/VEPROMS.CSLA.Library/Extension/ROFSTExt.cs
@@ -179,7 +179,10 @@ namespace VEPROMS.CSLA.Library
 			//string key = string.Format("{0}.{1}",dvi.DocVersionAssociations[0].ROFstID,dvi.DocVersionConfig.SelectedSlave);
 			string key = string.Format("{0}.{1}.{2}", ROFstID, dvi.DocVersionConfig.MaxSlaveIndex,  dvi.DocVersionConfig.SelectedSlave);
 			if (!dicLookups.ContainsKey(key))
+			{
+				dicLookups.Clear(); //B2022-001 clear the dictionary each time to free up memory - out of memory fix
 				dicLookups.Add(key, new ROFSTLookup(this, dvi));
+			}
 			return dicLookups[key];
 		}
 		#endregion