Bug with explorer.exe on zoomer dock
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Stardock Forums
When (windows) explorer.exe is dragged to the zoomer dock it only works once. After it is closed you can click on it multiple times and it will not open again.
Shift + Left Click will open it again.
Right clicking the icon and selecting - Open 'explorer.exe - Shortcut' will also open it
You can close ObjectDock 2.0 and re-open it and repeat the above steps with the same results.