Index: trunk/ppSub/src/ppSubConvolve.c
===================================================================
--- trunk/ppSub/src/ppSubConvolve.c	(revision 28566)
+++ trunk/ppSub/src/ppSubConvolve.c	(revision 28567)
@@ -239,4 +239,5 @@
         if (threads > 0) {
             pmSubtractionThreadsInit();
+            psThreadPoolInit(threads);
         }
         if (!pmSubtractionMatchPrecalc(inConv, refConv, input, ref, inRO->analysis,