vBSEO Sitemap: Cannot run sitemap generator directly: you should be logged in to do this.

[wowglider.de]

Hello,
i installed a fresh version of Vbulletin, Vbseo, VbseoSitemap, Vbet - all newest versions on http://www.bitcoins-deutschland.de (Bitcoins Forum Deutschland) .

Now I have some serios issues with the Vbseo Sitemap.

1.) I often cant reach the "vBSEO Sitemap Reports" Link
I need to login, click ok or enter and it says please login again, i login, then it says again please login and so on.

2.) At some point i can successfull loggin, but then i get the next error. I want to run the Sitemap generator thru "Run Gernerator" but then it says "Cannot run sitemap... (see title)".

I just did these changed on the Vbseo Sitemap:
Sitemap Generator integration - vBulletin Enterprise Translator (vBET)

Edit:
I also cant click the other Buttons like Download Log... i need to login all the time and then im back on the start screen of VbSeo Sitemap.

Edit2:
I disabled vBet and it still not working. I dont think its about my .htaccess:

RewriteEngine On
RewriteRule ^((urllist|sitemap).*\.(xml|txt)(\.gz)?)$ vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 [L]
RewriteRule ^/?(af|sq|ar|hy|az|eu|be|bg|ca|zh-CN|hr|cs|da|nl|en|et|tl|fi|fr|gl|ka|de|el|ht|iw|hi|hu|is|id|ga|it|ja|ko|lv|lt|mk|ms|mt|no|fa|pl|pt|ro|ru|sr|sk|sl|es|sw|sv|zh-TW|th|tr|uk|ur|vi|cy|yi)/$ vbenterprisetranslator_seo.php?vbet_lang=$1&redirected=/ [L,QSA]
RewriteRule ^/?(af|sq|ar|hy|az|eu|be|bg|ca|zh-CN|hr|cs|da|nl|en|et|tl|fi|fr|gl|ka|de|el|ht|iw|hi|hu|is|id|ga|it|ja|ko|lv|lt|mk|ms|mt|no|fa|pl|pt|ro|ru|sr|sk|sl|es|sw|sv|zh-TW|th|tr|uk|ur|vi|cy|yi)/(.*)?$ vbenterprisetranslator_seo.php?vbet_lang=$1&redirected=/$2 [L,QSA]
RewriteCond %{REQUEST_URI} !(admincp/|modcp/|vbseo_sitemap/|cron)
RewriteRule ^((archive/)?(.*\.php(/.*)?))$ vbenterprisetranslator_seo.php [L,QSA]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !^(admincp|modcp|clientscript|cpstyles|images)/
RewriteRule $ vbenterprisetranslator_seo.php [L,QSA]
RewriteRule ^((urllist|sitemap_).*\.(xml|txt)(\.gz)?)$ vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 [L]
RewriteCond %{REQUEST_URI} !(admincp/|modcp/|cron|vbseo_sitemap|api\.php)
RewriteRule ^((archive/)?(.*\.php(/.*)?))$ vbseo.php [L,QSA]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !/(admincp|modcp|clientscript|cpstyles|images)/
RewriteRule ^(.+)$ vbseo.php [L,QSA]

I think its about the changed done to get the sitemap working for vBet.