in which page you receive this warning?
you are using Joomla 1.5, right?

try disabling joomla's error reporting on joomla main configuration panel

I have installed the version for joomla 2.5
And the error occured in the admin page, i can't add anything (new genre ...)

that's the problem: the version you purchased is for Joomla 1.5! not 2.5

you purchased teh joomla 1.5 compatible package, no the 2.5 compatible!

In fact i have bought the 1.5 and 2.5 version

I made a mistake the first time and i had to purchase the 2.5 version

Here is the exact error :

JDatabaseMySQL::query: 1146 - Table 'musica.iwz8c_muscol_albums' doesn't exist SQL=SELECT al.*,ar.artist_name,f.format_name, u.name as username FROM iwz8c_muscol_albums as al LEFT JOIN iwz8c_muscol_artists as ar ON ar.id = al.artist_id LEFT JOIN iwz8c_muscol_format as f ON f.id = al.format_id LEFT JOIN iwz8c_users as u ON u.id = al.user_id ORDER BY al.added DESC


It seems that the mysql bases were not created during the installation of the component.

Can you tell me where are the sql file used during the installation of the component so that I can install manually ?

Thanks

Oh! Ok I see. I hadn't sern that
Well, i'm out of the office right now but if you want to give site access I'll be glad to take a look at it. Our email is joomlamusicsolutions@gmail.com

Anyone have an idea?

Error resolved

In fact, i had installed com_muscol_upgrade_220_to_221_1.6_NOT_AUTOINSTALL.zip
and not
com_muscol_2.3.0_community_pro_1.6.zip

sorry for the inconvenience

ah!! ok