On 10/11/2013 12:51, Kustaa Nyholm wrote: Hi PureJavaComm fans, Version 0.0.19 is out! Mainly a fix to make PJC work with XP and JNA 4.0.0 See the ChangeLog for details. br Kusti --------------------------------------------------------------- Version 0.0.20 * Fixed a bug that caused control (CTS,RTS etc) to throw an exception with JNA 4.0.0 * Reverted the use of CancelIoEx as it is not available on Windows XP * Re-worked and simplified file handle closing logic in Windows to prevent hangups * Added tests to test suite for successful closing of ports