diff -r 82b8749cff73 src/ai/ai_gui.cpp
--- a/src/ai/ai_gui.cpp	Sun Mar 17 21:03:22 2013 +0100
+++ b/src/ai/ai_gui.cpp	Sun Mar 17 21:20:55 2013 +0100
@@ -770,11 +770,11 @@
 	 * @param slot The slot to query.
 	 * @return True if and only if the given AI Config slot can e edited.
 	 */
 	static bool IsEditable(CompanyID slot)
 	{
-		if (slot == OWNER_DEITY) return _game_mode != GM_NORMAL;
+		if (slot == OWNER_DEITY) return _game_mode != GM_NORMAL || Game::GetInstance() != NULL;
 
 		if (_game_mode != GM_NORMAL) {
 			return slot > 0 && slot <= GetGameSettings().difficulty.max_no_competitors;
 		}
 		if (Company::IsValidID(slot) || slot < 0) return false;
@@ -918,11 +918,11 @@
 
 		if (!gui_scope) return;
 
 		this->SetWidgetDisabledState(WID_AIC_DECREASE, GetGameSettings().difficulty.max_no_competitors == 0);
 		this->SetWidgetDisabledState(WID_AIC_INCREASE, GetGameSettings().difficulty.max_no_competitors == MAX_COMPANIES - 1);
-		this->SetWidgetDisabledState(WID_AIC_CHANGE, this->selected_slot == INVALID_COMPANY);
+		this->SetWidgetDisabledState(WID_AIC_CHANGE, (this->selected_slot == OWNER_DEITY && _game_mode == GM_NORMAL) || this->selected_slot == INVALID_COMPANY);
 		this->SetWidgetDisabledState(WID_AIC_CONFIGURE, this->selected_slot == INVALID_COMPANY || GetConfig(this->selected_slot)->GetConfigList()->size() == 0);
 		this->SetWidgetDisabledState(WID_AIC_MOVE_UP, this->selected_slot == OWNER_DEITY || this->selected_slot == INVALID_COMPANY || !IsEditable((CompanyID)(this->selected_slot - 1)));
 		this->SetWidgetDisabledState(WID_AIC_MOVE_DOWN, this->selected_slot == OWNER_DEITY || this->selected_slot == INVALID_COMPANY || !IsEditable((CompanyID)(this->selected_slot + 1)));
 
 		for (TextfileType tft = TFT_BEGIN; tft < TFT_END; tft++) {