diff --git a/data/en.mse-locale/locale b/data/en.mse-locale/locale
index 5d413968..8b548a34 100644
--- a/data/en.mse-locale/locale
+++ b/data/en.mse-locale/locale
@@ -1,4 +1,4 @@
-mse version: 0.3.2
+mse version: 0.3.2
 full name: English
 
 ############################################################## Menu items
@@ -686,7 +686,7 @@ type:
 	upgradeable:	upgradeable
 	
 	install:		install
-	uninstall:		uninstalled
+	uninstall:		uninstall
 	upgrade:		upgrade
 	do nothing:		do nothing
 	new mse:		MSE outdated
diff --git a/src/data/locale.cpp b/src/data/locale.cpp
index 9dca1de0..c312e4cd 100644
--- a/src/data/locale.cpp
+++ b/src/data/locale.cpp
@@ -12,6 +12,7 @@
 #include <data/symbol_font.hpp>
 #include <util/io/package_manager.hpp>
 #include <script/to_value.hpp>
+#include <wx/wfstream.h>
 
 #include <wx/stdpaths.h>
 #if defined(__WXMSW__)
@@ -209,16 +210,26 @@ void Locale::validate(Version ver) {
 	r.handle_greedy(v);
 	// validate
 	String errors;
-	errors += translations[LOCALE_CAT_MENU   ].validate(_("menu"),    *v.sublocales[_("menu")   ]);
-	errors += translations[LOCALE_CAT_HELP   ].validate(_("help"),    *v.sublocales[_("help")   ]);
-	errors += translations[LOCALE_CAT_TOOL   ].validate(_("tool"),    *v.sublocales[_("tool")   ]);
-	errors += translations[LOCALE_CAT_TOOLTIP].validate(_("tooltip"), *v.sublocales[_("tooltip")]);
-	errors += translations[LOCALE_CAT_LABEL  ].validate(_("label"),   *v.sublocales[_("label")  ]);
-	errors += translations[LOCALE_CAT_BUTTON ].validate(_("button"),  *v.sublocales[_("button") ]);
-	errors += translations[LOCALE_CAT_TITLE  ].validate(_("title"),   *v.sublocales[_("title")  ]);
-	errors += translations[LOCALE_CAT_ACTION ].validate(_("action"),  *v.sublocales[_("action") ]);
-	errors += translations[LOCALE_CAT_ERROR  ].validate(_("error"),   *v.sublocales[_("error")  ]);
-	errors += translations[LOCALE_CAT_TYPE   ].validate(_("type"),    *v.sublocales[_("type")   ]);
+	// For efficiency, this needs to be parallel to LocaleCategory's values.
+	String sublocales[10] = {
+		_("menu"),
+		_("help"),
+		_("tool"),
+		_("tooltip"),
+		_("label"),
+		_("button"),
+		_("title"),
+		_("type"),
+		_("action"),
+		_("error")
+	};
+
+	for (String * current = sublocales; current < sublocales + 10; ++current) {
+		if (v.sublocales[*current])
+			errors += translations[current - sublocales].validate(*current,    *v.sublocales[*current]);
+		else
+			errors += _("\nError validating local file: expected keys file missing \"") + *current + _("\" section.");
+	}
 	// errors?
 	if (!errors.empty()) {
 		if (ver != app_version) {
diff --git a/src/gui/update_checker.cpp b/src/gui/update_checker.cpp
index d625e2b9..3d5fce21 100644
--- a/src/gui/update_checker.cpp
+++ b/src/gui/update_checker.cpp
@@ -10,6 +10,7 @@
 #include <data/settings.hpp>
 #include <util/io/package_manager.hpp>
 #include <util/version.hpp>
+#include <util/window_id.hpp>
 #include <script/value.hpp> // for some strange reason the profile build needs this :(
 #include <script/to_value.hpp>
 #include <wx/dialup.h>
@@ -184,7 +185,7 @@ void show_update_dialog(Window* parent) {
 class PackageUpdateList : public wxVListBox {
   public:
 	PackageUpdateList(UpdatesWindow* parent)
-		: wxVListBox (parent, wxID_ANY, wxDefaultPosition, wxSize(480,210), wxNO_BORDER | wxVSCROLL)
+		: wxVListBox (parent, ID_PACKAGE_LIST, wxDefaultPosition, wxSize(480,210), wxNO_BORDER | wxVSCROLL)
 		, parent(parent)
 	{
 		if (!checking_updates && !update_version_data) {
@@ -258,14 +259,11 @@ class PackageUpdateList : public wxVListBox {
 				,_TYPE_("new mse")
 			};
 			
-			// this doesn't work for me, is it really necessary?
-			//static Color textBack(0,0,0,wxALPHA_TRANSPARENT);
 			static Color packageFront(64,64,64);
 			
 			#define SELECT_WHITE(color) (IsSelected(n) ? *wxWHITE : color)
 			
 			dc.SetTextForeground(SELECT_WHITE(packageFront));
-			//dc.SetTextBackground(textBack);
 			dc.DrawText(pack->name, rect.GetLeft() + 1, rect.GetTop());
 			
 			dc.SetTextForeground(SELECT_WHITE(status_colors[status]));
@@ -274,7 +272,7 @@ class PackageUpdateList : public wxVListBox {
 			dc.SetTextForeground(SELECT_WHITE(action_colors[action]));
 			dc.DrawText(action_texts[action], rect.GetLeft() + 360, rect.GetTop());
 			
-			#undef SELECT_INVERT
+			#undef SELECT_WHITE
 		}
 	}
 	
@@ -304,27 +302,48 @@ END_EVENT_TABLE()
 // ----------------------------------------------------------------------------- : UpdateWindow
 
 UpdatesWindow::UpdatesWindow()
-	: Frame(nullptr, wxID_ANY, _TITLE_("package list"), wxDefaultPosition, wxSize(480,375), wxDEFAULT_DIALOG_STYLE | wxCLIP_CHILDREN)
+	: Frame(nullptr, wxID_ANY, _TITLE_("package list"), wxDefaultPosition, wxSize(480,400), wxDEFAULT_DIALOG_STYLE | wxCLIP_CHILDREN)
 {
 	SetIcon(wxIcon());
 	wxBoxSizer *v = new wxBoxSizer(wxVERTICAL);
+	wxBoxSizer *h1 = new wxBoxSizer(wxHORIZONTAL);
+	wxBoxSizer *h2 = new wxBoxSizer(wxHORIZONTAL);
 	
 	package_list = new PackageUpdateList(this);
 	description_window = new HtmlWindowToBrowser(this, wxID_ANY, wxDefaultPosition, wxSize(480,100), wxHW_SCROLLBAR_AUTO | wxSUNKEN_BORDER);
 	
 	setDefaultPackageStatus();
 	
-	// TODO: No absolute positioning please!
 	package_title = new wxStaticText(this, wxID_ANY, _TITLE_("package name"),   wxDefaultPosition, wxSize(120,15), wxALIGN_LEFT | wxST_NO_AUTORESIZE);
 	status_title  = new wxStaticText(this, wxID_ANY, _TITLE_("package status"), wxDefaultPosition, wxSize(120,15), wxALIGN_LEFT | wxST_NO_AUTORESIZE);
 	new_title     = new wxStaticText(this, wxID_ANY, _TITLE_("new status"),     wxDefaultPosition, wxSize(120,15), wxALIGN_LEFT | wxST_NO_AUTORESIZE);
-	package_title->Move(1,0);
-	status_title->Move(240,0);
-	new_title->Move(360,0);
 	
-	v->AddSpacer(15);
+	h1->Add(package_title);
+	h1->Add(status_title);
+	h1->Add(new_title, 2);
+	
+	(install_button = new wxButton(this, ID_INSTALL, _("Install")))->Disable();
+	(upgrade_button = new wxButton(this, ID_UPGRADE, _("Update")))->Disable();
+	(remove_button  = new wxButton(this, ID_REMOVE,  _("Remove")))->Disable();
+	(cancel_button  = new wxButton(this, ID_CANCEL,  _("Cancel")))->Disable();
+	
+	h2->AddStretchSpacer(1);
+	h2->Add(install_button);
+	h2->AddStretchSpacer(2);
+	h2->Add(upgrade_button);
+	h2->AddStretchSpacer(2);
+	h2->Add(remove_button);
+	h2->AddStretchSpacer(2);
+	h2->Add(cancel_button);
+	h2->AddStretchSpacer(1);
+	
+	v->Add(h1);
 	v->Add(package_list);
+	v->AddStretchSpacer(1);
 	v->Add(description_window);
+	v->AddStretchSpacer(1);
+	v->Add(h2);
+	v->AddStretchSpacer(1);
 	
 	SetSizer(v);
 }
@@ -333,6 +352,54 @@ void UpdatesWindow::onUpdateCheckFinished(wxCommandEvent&) {
 	setDefaultPackageStatus();
 }
 
+void UpdatesWindow::onPackageSelect(wxCommandEvent& ev) {
+	updateButtons(ev.GetInt());
+}
+
+void UpdatesWindow::onButton(wxCommandEvent& ev) {
+	PackageVersionDataP pack = update_version_data->packages[package_list->GetSelection()];
+	PackageAction& action = package_data[pack].second;
+	switch (ev.GetId()) {
+		case ID_INSTALL: action = ACTION_INSTALL; break;
+		case ID_REMOVE:  action = ACTION_UNINSTALL; break;
+		case ID_UPGRADE: action = ACTION_UPGRADE; break;
+		case ID_CANCEL:  action = (pack->app_version > file_version) ? ACTION_NEW_MSE : ACTION_NOTHING; break;
+	}
+	updateButtons(package_list->GetSelection());
+	package_list->Refresh();
+}
+
+void UpdatesWindow::updateButtons(int id) {
+	PackageVersionDataP pack = update_version_data->packages[id];
+
+	description_window->SetPage(pack->description);
+
+	PackageStatus status = package_data[pack].first;
+	PackageAction action = package_data[pack].second;
+
+	if (action == ACTION_NEW_MSE) {
+		install_button->Disable();
+		remove_button->Enable(status != STATUS_NOT_INSTALLED);
+		upgrade_button->Disable();
+		cancel_button->Disable();
+	} else if (status == STATUS_INSTALLED) {
+		install_button->Disable();
+		remove_button->Enable(action != ACTION_UNINSTALL);
+		upgrade_button->Disable();
+		cancel_button->Enable(action == ACTION_UNINSTALL);
+	} else if (status == STATUS_NOT_INSTALLED) {
+		install_button->Enable(action != ACTION_INSTALL);
+		remove_button->Disable();
+		upgrade_button->Disable();
+		cancel_button->Enable(action == ACTION_INSTALL);
+	} else /* status == STATUS_UPGRADEABLE */ {
+		install_button->Disable();
+		remove_button->Enable(action != ACTION_UNINSTALL);
+		upgrade_button->Enable(action != ACTION_UPGRADE);
+		cancel_button->Enable(action != ACTION_NOTHING);
+	}
+}
+
 void UpdatesWindow::setDefaultPackageStatus() {
 	if (!update_version_data) return;
 	FOR_EACH(p, update_version_data->packages) {
@@ -362,4 +429,9 @@ void UpdatesWindow::setDefaultPackageStatus() {
 
 BEGIN_EVENT_TABLE(UpdatesWindow, Frame)
 	EVT_COMMAND(wxID_ANY, UPDATE_CHECK_FINISHED_EVT, UpdatesWindow::onUpdateCheckFinished)
+	EVT_LISTBOX(ID_PACKAGE_LIST, UpdatesWindow::onPackageSelect)
+	EVT_BUTTON(ID_INSTALL, UpdatesWindow::onButton)
+	EVT_BUTTON(ID_REMOVE,  UpdatesWindow::onButton)
+	EVT_BUTTON(ID_UPGRADE, UpdatesWindow::onButton)
+	EVT_BUTTON(ID_CANCEL,  UpdatesWindow::onButton)
 END_EVENT_TABLE()
diff --git a/src/gui/update_checker.hpp b/src/gui/update_checker.hpp
index 66bbe5f8..3355cc8c 100644
--- a/src/gui/update_checker.hpp
+++ b/src/gui/update_checker.hpp
@@ -65,8 +65,14 @@ class UpdatesWindow : public Frame {
 	wxHtmlWindow* description_window;
 
 	wxStaticText *package_title, *status_title, *new_title;
+	wxButton *install_button, *upgrade_button, *remove_button, *cancel_button;
 	
 	void onUpdateCheckFinished(wxCommandEvent&);
+	void onPackageSelect(wxCommandEvent&);
+	void onButton(wxCommandEvent&);
+
+	/// Update the buttons to indicate that this is selected.
+	void updateButtons(int index);
 	
 	void setDefaultPackageStatus();
 };
diff --git a/src/util/window_id.hpp b/src/util/window_id.hpp
index 9cec1ebf..5315476c 100644
--- a/src/util/window_id.hpp
+++ b/src/util/window_id.hpp
@@ -237,6 +237,12 @@ enum ControlID {
 ,	ID_ZOOM_Y
 ,	ID_SHARPEN
 ,	ID_SHARPEN_AMOUNT
+	// Updates window
+,	ID_PACKAGE_LIST
+,	ID_INSTALL
+,	ID_UPGRADE
+,	ID_REMOVE
+,	ID_CANCEL
 };
 
 // ----------------------------------------------------------------------------- : EOF