Index: /trunk/psModules/src/camera/pmReadoutFake.c
===================================================================
--- /trunk/psModules/src/camera/pmReadoutFake.c	(revision 21103)
+++ /trunk/psModules/src/camera/pmReadoutFake.c	(revision 21104)
@@ -99,4 +99,7 @@
     for (int i = 0; i < numSources; i++) {
         pmSource *source = sources->data[i]; // Source of interest
+        if (!source) {
+            continue;
+        }
         if (source->mode & SOURCE_MASK) {
             continue;