[Plugin: WP Minify] Files not minified in multisite environment

Good morning,

i’m experience an issue with WP Minify. I’ve a wp multisite environment with two blogs in subdirectory setup

http://www.cookspot.it <the root one>
http://www.cookspot.it/en <the english version>

WP Minify works like a charm in the root one, while it doesn’t minify files in the other one. Option pages look totally the same, with same options set.

just to better point out, I experienced the same problem with the minify section of w3 total cache (before my switch to w3 super cache + wp minify), i guess it cannot be a coincidence…

tnx in advance for any help,
gabriele

http://wordpress.org/extend/plugins/wp-minify/