--- a/src/ai/ai_gui.cpp	Thu Jun 19 16:26:56 2008 +0000
+++ b/src/ai/ai_gui.cpp	Thu Jun 19 16:33:24 2008 +0000
@@ -19,6 +19,7 @@
 #include "../gfx_func.h"
 #include "../debug.h"
 #include "../command_func.h"
+#include "../network/network.h"
 
 #include "ai.h"
 #include "api/ai_types.hpp"
@@ -247,5 +248,9 @@
 
 void ShowAIDebugWindow()
 {
-	AllocateWindowDescFront<AIDebugWindow>(&_ai_debug_desc, 0);
+	if (!_networking || _network_server) {
+		AllocateWindowDescFront<AIDebugWindow>(&_ai_debug_desc, 0);
+	} else {
+		ShowErrorMessage(INVALID_STRING_ID, STR_AI_DEBUG_SERVER_ONLY, 0, 0);
+	}
 }

--- a/src/lang/english.txt	Thu Jun 19 16:26:56 2008 +0000
+++ b/src/lang/english.txt	Thu Jun 19 16:33:24 2008 +0000
@@ -3566,6 +3566,7 @@
 STR_AI_DEBUG_NAME_TIP                                           :{BLACK}Name of the AI
 STR_AI_DEBUG_RELOAD                                             :{BLACK}Reload AI
 STR_AI_DEBUG_RELOAD_TIP                                         :{BLACK}Kill the AI, reload the script, and restart the AI
+STR_AI_DEBUG_SERVER_ONLY                                        :{YELLOW}AI Debug window is only available for the server
 ########
 
 ############ town controlled noise level