I'm running 3.7.4
and PhotoPost vBGallery v2.4.3
oh wait i think i realize what i did wrong it hink
it's cause i added the FULL if (PP_SCRIPT != 'vBGallery'){
$config['Datastore']['class'] = 'vB_Datastore_XCache';
}
at the end of config i didn't know i had to just ADD the if statement
My bad

thanks