[MTUSUPPORT]

Ok,
I think I know what you have done. The search button is opening the Dialog, but you have it moved to a location that it can't be seen.

To fix this you must delete the Defaults for Hoster in the Registry.

Lets go into the Registry and Delete a few keys to reset this.

1) Go to the Start Menu\Run.
2) Type in Regedit and hit Ok.
3) Go to the Very Top to start with.
4) Click the + beside HKEY_CURRENT_USER
5) Click the + beside Software
6) Click the + beside Micro Technology Unlimited
7) Click the + beside Hoster
8) Click Default, press the Delete key, when Default is a blue/purple color, showing it is selected.

10) Try Hoster again and see what happens.

This should reset all of the settings to default.