OK - loaded the sample on our server.  The files queue OK, but then when hitting submit is when the issue occurs (see screenshot attached). It doesn't matter if we do it via drag-drop or browse.  On my local machine I successfully get the postback message and see the ListBox updated.   We're using IIS 7 in Classic mode. ...

Hi Ken,   No, using the same IE browser the demo site works fine.  The page I'm using is pretty basic, but it does have a few things loaded for Bootstrap.  I'll try loading the sample on our server and seeing how it goes.   Thanks for the reply - I'm eager to get this working!   -- Jason 

Hello - having an issue with drag-n-drop where sporadically a file being uploaded will hang at 1 second remaining... right before the file is, I assume, sent to the server.  I can set the upload page to a non-existent location and it still occurs, so the issue lies somewhere prior to the file being processed by the server. The file and file ...