It seems DB data are corrupted. We need to see the problem and have access DB and backend to investigate this problem.

Regards,
ARI Soft

I import the DB again and now when i try to install ari quiz i got this error

Unknown column 'asset_id' in 'where clause' SQL=SELECT QuestionId FROM #__ariquizquestion WHERE QuizId > 0 AND asset_id = 0

I'm still haveing problem with this.
The step i take:
Extracting all of this:

#__ariquizstatisticsinfo
#__ariquizstatistics
#__ariquizstatistics_pages - This is missing in Joomla 2.5

data from #__ariquizquestion and #__ariquizquestionversion

And then importing them in Joomla 3 DB.

After that i try to install Ari- Quiz from Joomla extension installation and i got this error:

Warning
Unknown column 'asset_id' in 'where clause' SQL=SELECT QuestionId FROM #__ariquizquestion WHERE QuizId > 0 AND asset_id = 0

Error
Error installing component

Are the same version of the extension is installed on both sites?

Regards,
ARI Soft