The problem: under Android OS applications installed to SD card using Android Market cannot be updated, showing error message.
- Connect your device to PC.
- On your device select Mount or External drive option.
- Open your device as a drive in My Computer.
- Find folder “.android.secure” or “/mnt/secure/asec/”
- Delete file “smdl2tmp1.asec” (L before the 2nd letter and letter 1 after “tmp”).
- Try to re-download updates via Android Market.
Hope that helps!