Index: trunk/psModules/src/camera/pmFPACopy.c
===================================================================
--- trunk/psModules/src/camera/pmFPACopy.c	(revision 14884)
+++ trunk/psModules/src/camera/pmFPACopy.c	(revision 15180)
@@ -83,4 +83,9 @@
     assert(source);
     assert(xBin > 0 && yBin > 0);
+
+    if (!source->data_exists) {
+        // Copied everything that exists
+        return true;
+    }
 
     // XXX this is a programming / config error
@@ -347,4 +352,9 @@
     assert(yBin > 0);
 
+    if (!source->data_exists) {
+        // Copied everything that exists
+        return true;
+    }
+
     psArray *targetCells = target->cells; // The target cells
     psArray *sourceCells = source->cells; // The source cells