Hi!
It is some kind of file permission/file writing issue, but I managed to find a way around it, the search style is now printed directly into the page header, so no css file is needed 🙂
I have modified the search files, if you need to reinstall the plugin, then please backup the wp-contents/plugins/ajax-search-pro/ directory.
I hope it will work fine now! If you have any questions or need assistance, feel free to contact me.
Best regards,
Ernest Marcinko