---
title: "MetaTrader 5 Client Terminal build 450 - Release Notes"
description: "Terminal: Fixed crash of the client terminal under Windows XP. MQL5: Fixed the default call of the constructor of objects. - Release Notes"
image: "https://www.metatrader5.com/i/logo_metatrader5.png"
url: "https://www.metatrader5.com/en/releasenotes/terminal/450"
---

# MetaTrader 5 Client Terminal build 450

## Terminal: Fixed crash of the client terminal under Windows XP. MQL5: Fixed the default call of the constructor of objects

16 May 2011

1. Terminal: Fixed crash of the client terminal under Windows XP.
2. MQL5: Fixed the default call of the constructor of objects.
3. MQL5: Fixed export of functions without parameters.
4. MQL5: Fixed incorrect compiler warnings.
5. MQL5: Added explanation of parametric [constructor](https://www.mql5.com/en/docs/basis/types/classes#constructor).
6. Fixed errors reported on the forum and in crash logs.

The live update is available through the [LiveUpdate system](https://www.metatrader5.com/en/terminal/help/start_advanced/autoupdate).

The MetaTrader 5 Client Terminal can be downloaded at [https://download.terminal.free/cdn/web/metaquotes.ltd/mt5/mt5setup.exe?utm_source=www.metatrader5.com](https://download.terminal.free/cdn/web/metaquotes.ltd/mt5/mt5setup.exe?utm_source=www.metatrader5.com&utm_campaign=metaquotes.download)

**Earlier publications:**

- [MetaTrader 5 Client Terminal build 448](https://www.metatrader5.com/en/releasenotes/terminal/448)
- [MetaTrader 5 iPhone build 439](https://www.metatrader5.com/en/releasenotes/iphone/439)
- [MetaTrader 5 Client Terminal build 441](https://www.metatrader5.com/en/releasenotes/terminal/441)
- [MetaTrader 5 Client Terminal build 439](https://www.metatrader5.com/en/releasenotes/terminal/439)
- [MetaTrader 5 Client Terminal build 430](https://www.metatrader5.com/en/releasenotes/terminal/430)