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This looks very similar to this thread - with a new user ID!. I'm not clear why you would ask the same question twice, but please don't, it wastes everyone's time.

See this thread. Converting to the Buttons extension will allow you to use HTML5 buttons instead of Flash.

That'll be a font issue, you need to include all the necessary fonts - see this thread: https://datatables.net/forums/discussion/comment/138501#Comment_138501

This example from this thread should get you going, it's doing just that,

Datatables has a paging protocol, described here, that handles server side paging, filtering and sorting. You will need to create or find a server script that follows the protocol. Not sure if ther…

ps what about the option list content separator as discussed in https://datatables.net/forums/discussion/comment/189787#Comment_189787

Sounds like the same issue as discussed in this thread although you have a different error.

Search the forum for the error:

Sorry in my first link I didn't post the thread link just the example.

This thread is one of many that discuss collapsing multiple rowGroups.

Depending on your requirements you could do something like this example from this thread. The example allows for only one range search to be active at a time.

This example from this thread demonstrates the reversing of the words,

Tho if the question is searching on the fixed column, this example from this thread should help,

Maybe its a timing issue since it looks like the issue is with promise. Can you show your code where you are destroying the Datatable? Is there an ajax request happening at the same time?

See my response on your other comment.

See Allan's example from this thread to create cascading select lists.

Uncaught TypeError: Cannot read property 'getDetails' of undefined

Did you look at the example in the thread I linked? You just need to change the if condition to match your requirements.

See this thread with an example doing something similar.

Maybe one of Allan's examples in this thread will give you some ideas. If they don't help please describe what you are tyring to accomplish - maybe we can provide some ideas.