The error is caused by Skype trying to access Bluetooth devices and some tries fail. You must go into the Windows Registry (be careful in making changes since this can affect your system).
- Click the Start button,
- in the search bar type: regedit (and press enter)
- give Administrator rights to run the program
- on the left, browse to the following area: HKEY_CURRENT_USER\Software\Widcomm\BTConfig\General\
- On the right side, look for DoNotIntegrateSkype
- Double click its icon and change its value to 0.
- Close the Registry editor.
- Restart Skype.
