Version:           2.4.0 (using KDE 4.6.0) 
OS:                Linux

Trying to send more than one music file to an MTP device results in an error that one is being sent already. However, the first file is transferred correctly, even though Amarok shows it as still being sent. Forcing it to abort results in the same error.

Reproducible: Always

Steps to Reproduce:
1. Open Amarok.
2. Connect an MTP device.
3. In Media Sources, open Local Music and wait for the device to be detected.
4. Go to Files, right-click on a music file, choose Copy To Collection.
5. Choose to copy.
6. Repeat steps 4 and 5.

Actual Results:  
Amarok shows a progress bar at the lower right indicating 0%. After completing step 6, an error "Tracks not copied: the device is already being copied to" appears.

Expected Results:  
The progress bar should go up to 100% and Amarok should allow copying more files to the device.

Using iRiver T10a. When sending the first file, the device indicates "Tranferring..." and after a while shows "USB Connect", indicating that the transfer was successful, yet Amarok is stuck at 0%. Transferred file is confirmed to be received successfully.

Using openSUSE 11.4 x86-64, libmtp 1.0.6-4.1.