vbchat problem

[dxflw]

i try to install vbchat 2.3 and i have problem during installation
i have correctly uploaded the files like the vBChat 2.3 Installation (FRESH).txt says
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vBChat.php --> ROOT FORUM DIRECTORY
vbchat.gif --> ROOT FORUM DIRECTORY/images
admin_vbchat.php --> ROOT FORUM DIRECTORY/admincp
install_vbchat.php --> ROOT FORUM DIRECTORY/admincp
vbchat.xml --> ROOT FORUM DIRECTORY/admincp
vbchat.php --> ROOT FORUM DIRECTORY/includes/cron
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but i get this problem:
1)

vBChat v1.1.1 Installation
Error. vbchat.xml located in directory '' was not found. Please make sure it is uploaded then press the submit button below

------------- then i upload the xml to the directory i try again and i get this:

vBulletin Message

Could not find phrase 'invalid_or_empty_style_file'.
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how can i fix this?

[Opserty]

If you have questions regarding a modification please post in the modification thread/board from which you downloaded, as the authors/other users will be the ones best placed to help you.

[Dismounted]

Please post in the specific modification thread for help with that modification.

[Opserty]

Stop copying me! :D