Fix finding of existing picture MXF.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/lib/writer.cc b/src/lib/writer.cc
index 1a11a482b..802877188 100644
--- a/src/lib/writer.cc
+++ b/src/lib/writer.cc
@@ -103,9 +103,6 @@ Writer::Writer (shared_ptr<const Film> f, weak_ptr<Job> j)
 		_picture_mxf.reset (new dcp::MonoPictureMXF (dcp::Fraction (_film->video_frame_rate (), 1)));
 	}
 
-	job->sub (_("Checking existing image data"));
-	check_existing_picture_mxf ();
-
 	_picture_mxf->set_size (_film->frame_size ());
 
 	if (_film->encrypted ()) {
@@ -136,6 +133,9 @@ Writer::Writer (shared_ptr<const Film> f, weak_ptr<Job> j)
 		throw InvalidSignerError ();
 	}
 
+	job->sub (_("Checking existing image data"));
+	check_existing_picture_mxf ();
+	
 	_thread = new boost::thread (boost::bind (&Writer::thread, this));
 
 	job->sub (_("Encoding image data"));