Frequently asked question:
downloading and using a Mio application

Temporary files folder is probably full.
If you are using Microsoft Internet Explorer, you can try Tools, Internet Options, Delete File.

You can uninstall a Mio from panel control, choose Add or remove applications.

Mio applications uses WebBrowser component, which is also used by Microsoft Internet Explorer.

Proceed as follows to set the Internet Explorer configuration :
  Open Settings, then Control panel from Start menu.
  Choose Internet options, then Connection.
  Configure Internet Explorer - request help from your Internet provider if necessary.

Active desktop is probably enabled on your computer
To deactivate it, right click on the desktop, choose Properties, Web, then unselect Activate my active desktop as a web page.

Each Mio application uses around 2 mb memory.
If your computer has less than 48 mb or RAM, you should use a maximum of tree Mio simultaneously.