Disconnect your navigation device and exit TomTom HOME as follows:
In the Finder menu, click TomTom HOME > Quit.
Delete the Downloads folder from the TomTom HOME directory, as follows:
In the Finder menu, click Go > Home.
In the Finder menu, click Edit > Copy "TomTom".
Click on the Desktop and then, in the Finder menu, click Edit > Paste Item.
This ensures that you have a backup of items you downloaded using TomTom HOME, which are saved in the Downloads folder.
In the Documents folder, open TomTom > HOME.
Select the Downloads folder, click File > Move to Trash.
Start TomTom HOME connect your navigation device again.
Re-initialise your navigation device
If the problem persists, the navigation device or memory card could be causing the problem and you need to re-initialise it. For instructions on how to do this, select your operating system from the list below.