--- a/scripts/install.py	Wed Sep 04 20:01:53 2019 +0200
+++ b/scripts/install.py	Thu Sep 05 18:47:56 2019 +0200
@@ -478,6 +478,9 @@
     except ImportError:
         # eric6 wasn't installed previously
         return
+    except SyntaxError:
+        # an incomplete or old config file was found
+        return
     
     global pyModDir, progLanguages