Index: trunk/ippTasks/detrend.process.pro
===================================================================
--- trunk/ippTasks/detrend.process.pro	(revision 14630)
+++ trunk/ippTasks/detrend.process.pro	(revision 14681)
@@ -133,5 +133,5 @@
     # look for new images in detPendingProcessedImfile
     book getpage detPendingProcessedImfile 0 -var pageName -key pantaskState INIT
-    if ($pageName == NULL) break
+    if ("$pageName" == "NULL") break
 
     book setword detPendingProcessedImfile $pageName pantaskState RUN
@@ -265,5 +265,5 @@
     # look for new exposures in detPendingProcessedExp
     book getpage detPendingProcessedExp 0 -var pageName -key pantaskState INIT
-    if ($pageName == NULL) break
+    if ("$pageName" == "NULL") break
 
     book setword detPendingProcessedExp $pageName pantaskState RUN