I searched forum and found no answer to my question

1. Production system is running well
2. I created a local installation (XAMPPLITE)
3. I exported all tables from procution system (except cms_siteprefs)
4. I imported database tables to local installation
5. I copied all files from procution system to local system (except config.php)
6. I started admin interface
7. Message from above popped up
8. I logged in to CMS
9. No chance to reinstall CGExtensions - screen shows error message on top and below menu line there is nothing
Any suggestions, what's wrong?
(Local system tested: PHP 5.3, PHP 5.2.9)
Greets