Change the language version to 1

external_res/pl-PL/language.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <string name="language_version">11</string>
+    <string name="language_version">1</string>
     <string name="language_url">http://polassis.pl/web_services/pl-PL/</string>
     <string name="language_name">Polski</string>
     <string name="language_code">pl-PL</string>