ARA programs disappear in Cubase Pro 13

My ARA programs all previously working, are no longer accessible in Cubase, are not available in Cubase header, nor in Cubase audio extensions drop down box. They are listed in Audio extensions but not active.
Any suggestions?
I have already reinstalled Latest Cubase Pro 13 and ARA programs, Melodyne and Spectralayers pro 11.

Resolved! I was trying to use them on midi file, not audio. DUH!

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