Have searchpanes working with client side processing, but when I enable server side processing then I get empty panes with No data available in table returned.
Here's a test case using the live server side processing example:
http://live.datatables.net/wasagami/2/edit?html,js,output
If I flip to "serverSide": false then the searchpanes load properly.
P.S. May or may not be related, but in watching the network requests I'm not seeing the searchPanes parameters in the AJAX request per https://datatables.net/extensions/searchpanes/serverside