Hi, First of all thank you for this great plugin, exactly what wordpress needs :)
So I bumped in this error, it appears x3 on every js file I want to combine:
Warning: strstr(): Empty delimiter in /var/www/vhosts/site/wp-content/plugins/mncombine/class-plugin-mncombine.php on line 663
No problem with jss compress, css combine and compress.
I tried all the options (development/production) etc.. but doesnt change.
I also cleared the cache but same.
Im on a vps with nginx / apache / apc php