warnings and stuck at step 3 "target"

[badi3]

After changing the .htaccess to "AddType x-mapp-php5 .php .php3 .php4 .htm .html" i am stuck in step 3. I had to delete the original htacces because it gave server error 500. I don't know is there is a relation between that change and the following warning. I see the contact information page, I can choose a country but than clicking on next brings me to the top of the page.
first 3 warnings at the top of the page, the last one at the bottom.

thanks for you help!

Warning: mysqli::set_charset() [mysqli.set-charset]: Couldn't fetch mysqli in /homepages/30/d348443789/htdocs/oc-includes/osclass/db.php on line 86

Warning: mysqli::query() [mysqli.query]: Couldn't fetch mysqli in /homepages/30/d348443789/htdocs/oc-includes/osclass/db.php on line 121

Warning: DB::osc_dbExec() [db.osc-dbexec]: Couldn't fetch mysqli in /homepages/30/d348443789/htdocs/oc-includes/osclass/db.php on line 123

Warning: DB::osc_dbExec() [db.osc-dbexec]: Couldn't fetch mysqli in /homepages/30/d348443789/htdocs/oc-includes/osclass/db.php on line 123
OSClass

Warning: mysqli::close() [mysqli.close]: Couldn't fetch mysqli in /homepages/30/d348443789/htdocs/oc-includes/osclass/db.php on line 93

[Juan Ramón]

Could you show us phpinfo(); ? Some screenshot or the url where we can see it.

Perhaps you have not enabled json. If this is the case, we're working on solve it: http://issues.osclass.org/browse/OSCLASS-223 Finally, from step 2 to 3 you didn't have any problem? The database was created well?

[Juan Ramón]

the json problem is solved but I don't know if it's your problem... (http://goo.gl/dlQ3g)