Advanced upload widget (Plupload) not showing

I am also experiencing the same/similar issue. After applying the updates recommended by the drupal system messages the plupload no longer works and in fact handicaps the single upload system. I have disabled plupload integration until a solution can be found. Basically the upload forms are not displaying properly. If I disable the Plupload module the media upload dialog displays properly.

Plupload integration can be used with many different upload modules. You should provide information about the one you use in order to get any useful help.

I'm having this issue on a new site, plupload + media.

It's a been a while since this has been updated... but I was having this same issue when using filefield sources and filefield sources plupload. After disabling, un-insalling, re-downloading all these modules and the 1.5.8 plupload library, deleting the examples folder in the library, then re-enabling and configuring everything, the advanced upload area still didn't show. Then, on a whim, I downloaded the library and temporarily kept the examples folder, enabled the modules, configured my field settings again, and lastly I deleted the examples folder.

Correlation or causation? I'm not sure, but doing that seems to have knocked everything into place... might work for others and save them frustration.

Any news regarding this issue? I'm experiencing the same without any success to solve. Thanks