Upload of a file cannot be performed in Developer Studio



I would like to upload a file to PC by Developer Studio.
But, it is not working.

It is able to download file to a communication terminal via USB.
But, upload of a file stops at the following screens.
Is there any cause considered by something?

Upload 1 file(s) from target to computer path D:\temp

(progress bar)

Uploading file /file.txt (Bytes: 0/4)

                          [ Run in Background ] [ Cancel ] [ Details >> ]

Developer Studio : version 2.3.0
LSI of communication unit : SL8084T
Communication unit : AX8084NE
PC OS : Windows 7 Professional SP1 x86


This is a known issue, which will be fixed in next DS release (unfortunately, no workaround…)