diff -up hplip-3.18.6/base/utils.py.stopiteration hplip-3.18.6/base/utils.py
--- hplip-3.18.6/base/utils.py.stopiteration	2018-11-12 16:27:25.938082056 +0100
+++ hplip-3.18.6/base/utils.py	2018-11-12 16:28:02.678793293 +0100
@@ -265,7 +265,7 @@ def walkFiles(root, recurse=True, abs_pa
     try:
         names = os.listdir(root)
     except os.error:
-        raise StopIteration
+        return 
 
     pattern = pattern or '*'
     pat_list = pattern.split(';')