'Multi User 1.4' Plugin

[Shasaar]

It says "Unable to load XML file!"

Hello,
I just stumbled across the same failure with 1.9.0 but I can't even create a new user, as soon as I activate the plugin, the whole CMS is busted and leaves me with that message in the far left corner of the window.

Disabled any plugins, but still the same failure, I just can't get it to work, only chance to get GetSimple back working is to delete the plugin via FTP.
I don't know what's going wrong, cause the same plugin works on a different installation.

Tried the "reorder plugin", but that one doomed the CMS also.
Killed the plugins.xml and the CMS came back to life.
Enabled ONLY user-managment and doomed again.
Killed the plugins.xml and the CMS came back again.

Here's the xml after it caused the failure:

Code:

<channel>
<item>
<plugin>anonymous_data.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>flat-blue.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>user-managment.php</plugin>
<enabled>true</enabled>
</item>
<item>
<plugin>i18n_navigation.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>sa_toolbar.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>i18n_customfields.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>modern_admin.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>i18n_specialpages.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>GSMaintenance.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>hitcount.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>InnovationPlugin.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>news_manager.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>dynpages.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>theme_highlighter.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>i18n_search.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>Imagizer.php</plugin>
<enabled>false</enabled>
</item>
<item>
<plugin>i18n_base.php</plugin>
<enabled>false</enabled>
</item>
</channel>

What's wrong with it?

Any suggestions please?
Would be glad for any help.
Thanks in advance.
Shasaar