diff --git PreferencesController.m PreferencesController.m
index 1103e39..76a77a7 100644
--- PreferencesController.m
+++ PreferencesController.m
@@ -15,6 +15,7 @@ - (IBAction)selectPKGPath:(id)sender {
     NSOpenPanel *openPanel = [NSOpenPanel openPanel];
     [openPanel setCanChooseFiles:NO];
     [openPanel setCanChooseDirectories:YES];
+    [openPanel setShowsHiddenFiles:YES];
     NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
     NSInteger result = [openPanel runModalForDirectory:[defaults objectForKey:@"NSNavLastCurrentDirectory"] file:nil types:nil];
     if(result == NSOKButton) {
@@ -37,7 +38,7 @@ - (IBAction)selectPKGPath:(id)sender {
                                     defaultButton:@"OK" 
                                     alternateButton:nil 
                                     otherButton:nil 
-                                    informativeTextWithFormat:@"You have to use the directory where macports1.0 was installed by MacPorts.\n\nGenerally it should be /Library/Tcl"];
+                                    informativeTextWithFormat:@"You have to use the directory where macports1.0 was installed by MacPorts.\n\nGenerally it should be /opt/local/libexec/macports/lib"];
             [alert runModal];
         }
     }
