Index: trunk/psModules/src/camera/pmFPARead.c
===================================================================
--- trunk/psModules/src/camera/pmFPARead.c	(revision 8815)
+++ trunk/psModules/src/camera/pmFPARead.c	(revision 9321)
@@ -339,6 +339,7 @@
 
     if (!pmConceptsReadCell(cell, PM_CONCEPT_SOURCE_HEADER, true, NULL)) {
-        psError(PS_ERR_UNKNOWN, false, "Failed to read concepts for cell");
-        return false;
+        //psError(PS_ERR_UNKNOWN, false, "Failed to read concepts for cell");
+        //return false;
+        psWarning("Difficulty reading concepts for cell; attempting to proceed.");
     }
 
@@ -346,4 +347,8 @@
     psRegion *trimsec = psMetadataLookupPtr(NULL, cell->concepts, "CELL.TRIMSEC");
     psList *biassecs = psMetadataLookupPtr(NULL, cell->concepts, "CELL.BIASSEC");
+    if (psRegionIsNaN(*trimsec)) {
+        psError(PS_ERR_IO, false, "CELL.TRIMSEC is not set --- can't read cell.\n");
+        return false;
+    }
 
     // Iterate over each of the image planes