HikaShop2.0.0 on Joomla 3.0 several problems

In IE the same thing happens as in Firefox with cookies deactivated:

• Put one product in the basket -> ok.
• Put the next product in the basket -> the first product has gone out of the basket, only the second one is in there.
• Now going to check out -> basket ist empty.

In IE the same thing happens as in Firefox with cookies deactivated:
- Put one product in the basket -> ok.
- Put the next product in the basket -> the first product has gone out of the basket, only the second one is in there.
- Now going to check out -> basket ist empty.

I guess no:

Hi Nicolas,

thanks for your response. I must admit, that I understand none of the 3 items you wrote
What's CDN, and where can I change Theme Cache and Session Mgr?

Nicolas, thanks for your hints, I've checked them out:
- any combination of Cache/Session in <Configuration>-<System>, no success
- in Theme Protostar I've searched for the keyword "cach" - not found

I guess I'd give up and rather wait for the next Joomla Update... Or should I turn to Joomla 2.5.x?

Ups! When I turn on Debug Mode, not even the homepage will be displayed! Instead following message is shown:

Warning: simplexml_load_file(/mnt/web6/c1/51/5153151/htdocs/TedRichley/language/de-DE/de-DE.xml): failed to open stream: Too many open files in /mnt/web6/c1/51/5153151/htdocs/TedRichley/libraries/joomla/language/language.php on line 1302 Warning: simplexml_load_file(): I/O warning : failed to load external entity "/mnt/web6/c1/51/5153151/htdocs/TedRichley/language/de-DE/de-DE.xml" in /mnt/web6/c1/51/5153151/htdocs/TedRichley/libraries/joomla/language/language.php on line 1302 Warning: file_get_contents(/mnt/web6/c1/51/5153151/htdocs/TedRichley/language/overrides/de-DE.override.ini): failed to open stream: Too many open files in /mnt/web6/c1/51/5153151/htdocs/TedRichley/libraries/joomla/language/language.php on line 811 Warning: simplexml_load_file(/mnt/web6/c1/51/5153151/htdocs/TedRichley/language/de-DE/de-DE.xml): failed to open stream: Too many open files in /mnt/web6/c1/51/5153151/htdocs/TedRichley/libraries/joomla/language/language.php on line 1302 Warning: simplexml_load_file(): I/O warning : failed to load external entity "/mnt/web6/c1/51/5153151/htdocs/TedRichley/language/de-DE/de-DE.xml" in /mnt/web6/c1/51/5153151/htdocs/TedRichley/libraries/joomla/language/language.php on line 1302 Warning: file_get_contents(/mnt/web6/c1/51/5153151/htdocs/TedRichley/language/overrides/de-DE.override.ini): failed to open stream: Too many open files in /mnt/web6/c1/51/5153151/htdocs/TedRichley/libraries/joomla/language/language.php on line 811 Error displaying the error page: SplFileObject::__construct(/mnt/web6/c1/51/5153151/htdocs/TedRichley/language/overrides/de-DE.override.ini): failed to open stream: Too many open files

Furthermore:
If Debug mode for language is turned off, but still Debug Mode for System activated, when going to HikaShop following message is displayed:
Notice: Undefined variable: meta in /mnt/web6/c1/51/5153151/htdocs/TedRichley/templates/tr-protostar/index.php on line 103
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Now I've commented out Line 103 (is part of an Facebook OpenGraph patch), but the error message still persists. This way I've mentioned, that it ain't possible no more to clear the cache [Message: "Error purging expired items"] - maybe this is the result of yesterday's trials with cache settings?!?