Not able to upload gpx file

Hi,

When I tried to upload gpx file in post the result was “0”.

I read the thread “WP 3.9 + GPX 3.5”. I deleted cache and reinstalled the plugin.

Now when I try to upload gpx file “ATLSoft Uploader” popup stay white when I click on the upload file button.

What is wrong ?

Thanks.

https://wordpress.org/plugins/google-maps-gpx-viewer/