I’m also having the same problem. I checked and my version of the plugin is up-to-date and I’m also running the most current version of WordPress. I also tried it within Safari, Chrome and Firefox on my Mac and received the same error. Each time I select ‘Add File’ from the WordPress Documents backend dashboard, then ‘Choose File’ from the pop up window, I select a file and then it doesn’t show up in the window. It looks like nothing has happened. I also didn’t see any errors in the browser. Here’s how I see the code change when I view the source:
Here’s how the code looks before I upload:
<div id="cdm_upload_fields">
<input id="file_upload" name="dlg-upload-file[]" type="file" class="required">
<div id="upload_list"></div>
</div>
Here’s how it looks after I upload a file:
<div id="cdm_upload_fields">
<input type="file" name="dlg-upload-file[]">
<input id="file_upload" name="dlg-upload-file[]" type="file" class="required" style="position: absolute; left: -9999px; display: none;">
<div id="upload_list"></div>
</div>
The interesting part is that when I view the source and then search for the file name I uploaded, I see it within a div that has a class of “remodel” but I can’t see the file name anywhere on the page so it looks like this content region is hidden.
Hope this info helps to resolve the issue. My experience with the plugin has been great so far and this is only one of a couple minor bugs I’ve run across.
