--- a/odfcast/convert.py	Fri Aug 25 20:57:11 2017 +0200
+++ b/odfcast/convert.py	Thu Jun 07 14:33:44 2018 +0200
@@ -153,6 +153,7 @@
                 t.render(datadict)
                 outfile.close()
                 outfile = tfile
+                outfile.seek(0)
             except Exception, e:
                 log.exception("Template error")
                 return TemplateErrorResponse(details=str(e))