MS Edge - readEntries() doesn't work

Hello everyone,

i want to traverse a file system like in following example:

function traverse(entry, path) {     path = path || "";     if (entry.isFile) {       // Get file       item.file(function(file) {         console.log("File:", path + file.name);       });     } else if (entry.isDirectory) {       // Get folder contents       var dirReader = entry.createReader();       dirReader.readEntries(function(entries) {         for (var i = 0; i < entries.length; i++) {           traverse(entries[i], path + entry.name + "/");         }       });     }   }     dropArea.addEventListener("drop", function(e) {     e.preventDefault();     var items = event.dataTransfer.items;     for (var i = 0; i < items.length; i++) {       var entry = items[i].webkitGetAsEntry();       if (entry) {         traverse(entry);       }     }   }, false);


My problem is, that in MS Edge it doesn't work. the error callback just returns 'unknown error'.
And i have really no idea why it is not working in MS Edge. FF and Chrome are ok. 

I am using GWT 2.7 --> an update to 2.8 is not possible because i have to use Java 6.

I really hope that anyone of you has any idea for me

Best Regards 

Daniel 

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