diff --git a/code/nel/src/misc/common.cpp b/code/nel/src/misc/common.cpp
index 41a11976f..b40734b73 100644
--- a/code/nel/src/misc/common.cpp
+++ b/code/nel/src/misc/common.cpp
@@ -777,8 +777,12 @@ bool launchProgram(const std::string &programName, const std::string &arguments,
 
 	int res = system(command.c_str());
 
-	if (res && log)
+	if (!res) return true;
+
+	if (log)
+	{
 		nlwarning ("LAUNCH: Failed launched '%s' with arg '%s' return code %d", programName.c_str(), arguments.c_str(), res);
+	}
 #else
 
 	static bool firstLaunchProgram = true;
diff --git a/code/nel/tools/3d/mesh_export/main.cpp b/code/nel/tools/3d/mesh_export/main.cpp
index be19c92ff..f22e53f41 100644
--- a/code/nel/tools/3d/mesh_export/main.cpp
+++ b/code/nel/tools/3d/mesh_export/main.cpp
@@ -43,7 +43,7 @@ int main(int argc, char *argv[])
 	NL3D::registerSerial3d();
 
 	sint res = 0;
-	
+
 	for(uint i = 0; i < filePathes.size(); ++i)
 	{
 		std::string filePath = filePathes[i];
@@ -78,6 +78,8 @@ int main(int argc, char *argv[])
 			settings.ToolErrorLog = settings.DestinationDirectoryPath + "error.log";
 
 		res = exportScene(settings);
+
+		if (res != EXIT_SUCCESS) break;
 	}
 
 	return res;
diff --git a/code/ryzom/client/src/login.cpp b/code/ryzom/client/src/login.cpp
index 43c00b18f..72d59e61f 100644
--- a/code/ryzom/client/src/login.cpp
+++ b/code/ryzom/client/src/login.cpp
@@ -899,7 +899,7 @@ bool login()
 	Actions.enable(true);
 	EditActions.enable(true);
 
-	if(ClientCfg.ConfigFile.exists("pPM->isVerboseLog()"))
+	if(ClientCfg.ConfigFile.exists("VerboseLog"))
 		pPM->setVerboseLog(ClientCfg.ConfigFile.getVar("VerboseLog").asInt() == 1);
 	if(pPM->isVerboseLog()) nlinfo("Using verbose log mode");
 
@@ -1848,25 +1848,10 @@ class CAHOpenURL : public IActionHandler
 		}
 		else
 		{
-			DWORD ret = 0;
-			LPVOID lpMsgBuf;
-			FormatMessage(
-				FORMAT_MESSAGE_ALLOCATE_BUFFER |
-				FORMAT_MESSAGE_FROM_SYSTEM |
-				FORMAT_MESSAGE_IGNORE_INSERTS,
-				NULL,
-				ret,
-				MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
-				(LPTSTR) &lpMsgBuf,
-				0,
-				NULL
-			);
 			// Process any inserts in lpMsgBuf.
 			// ...
 			// Display the string.
-			nlwarning("RegQueryValue for '%s' : %s", KeyName, lpMsgBuf);
-			// Free the buffer.
-			LocalFree( lpMsgBuf );
+			nlwarning("RegQueryValue for '%s' : %s", KeyName, NLMISC::formatErrorMessage(0).c_str());
 		}
 #else
 		// TODO: for Linux and Mac OS