Index: webapp-config-1.50.16/WebappConfig/server.py
===================================================================
--- webapp-config-1.50.16.orig/WebappConfig/server.py
+++ webapp-config-1.50.16/WebappConfig/server.py
@@ -158,7 +158,7 @@ class Basic:
 
         # is the installation directory empty?
 
-        if not os.listdir(self.__destd):
+        if not os.listdir(self.__destd) and os.path.isdir(self.__destd):
             if not self.__p:
                 os.rmdir(self.__destd)
         else: