[Typo3] Cannot put language iso code... :(

[Marc Valentin]

When I define a language in the BE, I cannot choose an iso code. The 
listbox with the iso codes is empty and I get these error lines at the 
top of my screen :

Unknown column 'lg_country_iso_2' in 'field list'
Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL 
result resource in 
/home/abeditions/www/typo3conf/ext/sr_static_info/class.tx_srstaticinfo_div.php 
on line 280
Unknown column 'lg_country_iso_2' in 'field list'
Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL 
result resource in 
/home/abeditions/www/typo3conf/ext/sr_static_info/class.tx_srstaticinfo_div.php 
on line 155

What am I missing ?
-marc-