I found a solution for the image showing for those that nothing else work, i made a rule for every blog like this:
# rule for blog2
RewriteCond %{HTTP_HOST} ^([^\.]+)\.yourdomain\.com$ [NC]
RewriteCond %1 ^(blog2)$ [NC]
RewriteRule ^files/(.*) /wp-inst/wp-content/blogs.dir/2/files/$1 [L]
# rule for blog3
RewriteCond %{HTTP_HOST} ^([^\.]+)\.yourdomain\.com$ [NC]
RewriteCond %1 ^(blog3)$ [NC]
RewriteRule ^files/(.*) /wp-inst/wp-content/blogs.dir/3/files/$1 [L]
# rule for adminblog
RewriteRule ^files/(.*) /wp-inst/wp-content/blogs.dir/1/files/$1 [L]
Its a little work but at least work until this issue its resolved, i hope this can help someone.
Tambien hablo español y me gustarÃa saber si hay alguien más que hable español para empezar una comunidad MU en español. saludos.