Index: /branches/pap_branch_20090128/pswarp/src/pswarpTransformTile.c
===================================================================
--- /branches/pap_branch_20090128/pswarp/src/pswarpTransformTile.c	(revision 21288)
+++ /branches/pap_branch_20090128/pswarp/src/pswarpTransformTile.c	(revision 21289)
@@ -115,5 +115,5 @@
         yIn -= outRow0;
         psKernel *kernel = psImageInterpolationKernel(xIn, yIn, args->interp->mode); // Interpolation kernel
-        args->covariance = psImageCovarianceCalculate(kernel, args->output->covariance);
+        args->covariance = psImageCovarianceCalculate(kernel, args->input->covariance);
         psFree(kernel);
     }