wp Time Machine 1.8.3 and WordPress dashboard

Hi together,

when using wp Time Machine V1.8.3 I get the following error message when using the wordpress dashboard on the new plugins and incoming links area:

Fatal error: Cannot redeclare init() (previously declared in /mnt/web9/30/07/5138807/htdocs/wp-content/plugins/wp-time-machine/includes/wpTimeMachineCore.php4:9) in /mnt/web9/30/07/5138807/htdocs/wp-includes/rss.php on line 664

With wp Time Machine V1.7.9 everything is ok.

Some of my stats are:
Server: OS SunOS Software Apache/2.2.15 (Unix) Version 32Bit
System: PHP 5.2.12 SQL 5.0.67 Build 5.0.89-log
WordPress: Version 2.9.2

Maybe someone can help me with this?
Thanks in advance
Uwe

https://www.ads-software.com/extend/plugins/wp-time-machine/