Opening the instrument Editor gets blank dialog

-I’ve got Cubase LE 7
-Connected EWQLSO gold as plugin to it.
-Created 1 Instrument track with EWQLSO as VST.
-Defined the instrument with the Instrument Editor.
-Ok till here.
-Created second instrument track, also with EWQLSO as VST.
-Tried to open the instrument editor.
-Get Blank dialog in response(See image in attachment)
-Oh no, cant edit the second instrument.
-Proceed to try opening the instrument editor of the first instrument track.
-Get blank dialog in response.
-Oh no, can’t work with Cubase LE 7 with VST’s
Please, help :confused: