CQ5.5 Image component can't drop nor click to upload image file

Hi,

Image component can't drop nor click to upload image file after upgrading from CQ5.3 to CQ5.5

Now get stuck in production and hope anyone can help.

1). used both IE9 and Firefox 14.0.1 to create a "Image" component under General (CQ default components) from sidekick menu.

2). A dialog box pops up showing "Drop an Image or click to upload".

3). Tried drop an image from window explorer; instead of upload the file both IE and Firefox just open the image file.

4). Tried "click to upload"  > a file selector dialog pops up > open the image file > then nothing happened.

5). The same problem happened when using the CQ "Video" component.

If anyone know how to fix the probem, please help.