ShortKeys goes into suspended mode
Every so often ShortKeys goes into a suspended mode.
You can suspend ShortKeys by right clicking on the icon in the Notification Area and left clicking on the Suspend ShortKeys menu item. You may want to suspend ShortKeys while using a specific application and not accidentally trigger a ShortKey macro.
Another way to suspend the program is through use of a hot key. The default key is Alt + `. You may be using this combination in another application and unknowingly suspending ShortKeys. Click on Options, Preferences, Activation to select another combination or turn off this option.