Follow-up to #5203, related to #5174: GameSetupDialog needs to handle…

… exceptions due to foreign characters in the filenames.

radiant/ui/prefdialog/GameSetupPageTdm.cpp

@@ -4,6 +4,7 @@
 #include <regex>
 #include "i18n.h"
 #include "imodule.h"
+#include "itextstream.h"
 #include "igame.h"
 
 #include "wxutil/dialog/MessageBox.h"
@@ -16,6 +17,7 @@
 #include <wx/panel.h>
 
 #include "string/trim.h"
+#include "string/encoding.h"
 #include "os/file.h"
 #include "os/path.h"
 #include "os/dir.h"
@@ -219,7 +221,16 @@ void GameSetupPageTdm::validateSettings()
 
 	os::foreachItemInDirectory(_config.enginePath, [&](const fs::path& path)
 	{
-		found |= std::regex_match(path.filename().string(), exeRegex);
+		try
+		{
+			found |= std::regex_match(path.filename().string(), exeRegex);
+		}
+		catch (const std::system_error& ex)
+		{
+			rWarning() << "[vfs] Skipping file " << string::to_utf8(path.filename().wstring()) <<
+				" - possibly unsupported characters in filename? " <<
+				"(Exception: " << ex.what() << ")" << std::endl;
+		}
 	});
 
 	if (!found)