[SOLVED] Joomla 2.5 --> Joomla 3

Hi,
I have to import a joomla 2.5 db in a new website with joomla 3. In the old website I managed my content with Flexicontent. I'm having some problems with this operation. What i did is:
- drop _content, _categories and all _flexicontent tables of the new database
-import _content, _categories and all _flexicontent tables from the old database
- fix the database error in the backend --> Extensions --> manage extensions --> Database

Where am I wrong? Can someone help me, please?

what is your error ?
did ou use same flexicontent version ?
flexicontent version ?

I don't remember the flexicontent version of the old site. I have only the db.
Now I have a new site with joomla 3 and flexicontent 2.2.1, certainly a newer version than the old website.
The browser does not return an error, simply it doesn't load the frontend.

backend is good ?
i think it's a teplpate problem
try to update dev log to maximum

backend in good, it works and there are all articles and categories that i've imported in the new db. Now I've tried to change template and the situation is: 404 error:
Errors
Article not found
Call stack
# Function Location
1 JApplicationCms->execute() JROOT/index.php:40
2 JApplicationSite->doExecute() JROOT/libraries/cms/application/cms.php:255
3 JApplicationSite->dispatch() JROOT/libraries/cms/application/site.php:208
4 JComponentHelper::renderComponent() JROOT/libraries/cms/application/site.php:178
5 JComponentHelper::executeComponent() JROOT/libraries/cms/component/helper.php:332
6 require_once() JROOT/libraries/cms/component/helper.php:352
7 JControllerLegacy->execute() JROOT/components/com_content/content.php:17
8 ContentController->display() JROOT/libraries/legacy/controller/legacy.php:722
9 JControllerLegacy->display() JROOT/components/com_content/controller.php:79
10 ContentViewArticle->display() JROOT/libraries/legacy/controller/legacy.php:685
11 JViewLegacy->get() JROOT/components/com_content/views/article/view.html.php:37
12 ContentModelArticle->getItem() JROOT/libraries/legacy/view/legacy.php:398
13 JError::raiseError() JROOT/components/com_content/models/article.php:162
14 JError::raise() JROOT/libraries/legacy/error/error.php:253

no refrence to flexicontent .... strange try to create a link to joomla content to test it