activating an older veson of CubaseLE on mac os 10.7.5

hello im trying to install an older version of cubase on my mac (i cannot upgrdae my mac past 10.7.5 - its old). i can get cubase 7 downloaded but cannot activate it. the elincenser says upgrade when i upgrade it says not compatible with this software.
does anyone have any suggestions.

can i get cubase LE on an old mac?

thanks
Drew

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