Try removing the space.
"Gate"="%~dp0 C:\\wamp\\www\\xxx\\trunk\\xxxClient\\xxxClientWPF\\xxxClientWPF\\bin\\Debug\\xxxClientWPF.exe"
should read like this.
"Gate"="%~dp0C:\\wamp\\www\\xxx\\trunk\\xxxClient\\xxxClientWPF\\xxxClientWPF\\bin\\Debug\\xxxClientWPF.exe"
see if this works.