--- a/runtime/PLCObject.py	Fri Jul 12 11:51:47 2019 +0200
+++ b/runtime/PLCObject.py	Fri Jul 12 11:53:04 2019 +0200
@@ -530,7 +530,7 @@
 
     @RunInMain
     def PurgeBlobs(self):
-        for fobj, _path, _md5sum in self.blobs:
+        for fobj, _path, _md5sum in self.blobs.values():
             os.close(fobj)
         self._init_blobs()