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Hello,

I'm sorry to have to tell you that it doesn't exactly fix the problem, the fields get cloned, but not properly, as they are all given the same temporary name.
by the way i could use your code to find a way to fix it, and this seems to do it,
between lines 109 and 118 of js/file.js

//$clone.find( '.rwmb-file-input' ).attr( 'name', inputName + '[]' ).not( ':first' ).remove();
		
$clone.find( '.rwmb-file-new' ).each( function() {
	inputName = '_file_' + rwmb.uniqid(); // need to generate a temp unique name for each new input file
	$( this ).find( '.rwmb-file-input' ).attr( 'name', inputName + '[]' ).not( ':first' ).remove();
	$key = $( this ).siblings( '.rwmb-file-index' ); // find the nearest index_field 
	$key.val( inputName ); // assign the new temporary name to the file_index field
} );
		
//$key.val( inputName );

but i guess that there is a little bit more refactor and cleaning to do in this function as there is still pieces of code that are maybe useless..

can you at least ask the devs if what i did is ok and doesn't risk to break anything else ?

as a result, i seem to be able to upload multiple files even when cloning multiple times befors sending the form. looks like it's working .

Hello,
thank you for you answer,
if you could give me a quick fix, however complicated it is (not scared of js and php),
so i don't have to wait the next update it would be great. I really need this functionnality for a dev, and i could'nt fix it by myself.