Index: /trunk/pswarp/src/pswarpTransformReadout.c
===================================================================
--- /trunk/pswarp/src/pswarpTransformReadout.c	(revision 33089)
+++ /trunk/pswarp/src/pswarpTransformReadout.c	(revision 33090)
@@ -143,5 +143,5 @@
     // wait for the threads to finish and manage results
     // wait here for the threaded jobs to finish
-    if (!psThreadPoolWait (false)) {
+    if (!psThreadPoolWait (false, true)) {
         psError(psErrorCodeLast(), false, "Unable to interpolate image.");
         return false;