Index: dev/dh-umc-module-build
===================================================================
--- dev/dh-umc-module-build	(Revision 48341)
+++ dev/dh-umc-module-build	(Arbeitskopie)
@@ -60,7 +60,9 @@
 		for module in modules:
 			for po_file in module.python_po_files:
 				dh_umc.create_po_file( po_file, package, module.python_files )
-				dh_umc.create_mo_file( po_file )
+				rc = dh_umc.create_mo_file( po_file )
+				if rc:
+					sys.exit(rc)
 
 		# build javascript PO files
 		for module in modules:
@@ -73,7 +75,9 @@
 	for module in modules:
 		for lang, po_file in module.xml_po_files:
 			dh_umc.module_xml2po( module, po_file, lang )
-			dh_umc.create_mo_file( po_file )
+			rc = dh_umc.create_mo_file( po_file )
+			if rc:
+				sys.exit(rc)
 
 
 if __name__ == '__main__':
Index: dev/dh-umc-translate
===================================================================
--- dev/dh-umc-translate	(Revision 48341)
+++ dev/dh-umc-translate	(Arbeitskopie)
@@ -99,7 +99,9 @@
 		if len(args):
 			# only re-create po files if javascript files are given
 			dh_umc.create_po_file( ipo_file, options.package, args)
-		create_final_output( ipo_file)
+		rc = create_final_output( ipo_file)
+		if rc:
+			sys.exit(rc)
 
 if __name__ == '__main__':
 	main()
Index: dev/dh_umc.py
===================================================================
--- dev/dh_umc.py	(Revision 48341)
+++ dev/dh_umc.py	(Arbeitskopie)
@@ -271,7 +271,7 @@
 		dh_ucs.doIt( 'mv', message_po, po_file )
 
 def create_mo_file( po_file ):
-	dh_ucs.doIt( 'msgfmt', '--check', '--output-file', po_file.replace( '.po', '.mo' ), po_file )
+	return dh_ucs.doIt( 'msgfmt', '--check', '--output-file', po_file.replace( '.po', '.mo' ), po_file )
 
 def create_json_file( po_file ):
 	json_file = po_file.replace( '.po', '.json' )