CS5.5 Master now says invalid serial #.

I have installed and registered CS5.5 Master 4 years ago and everything worked perfectly until this month when statt everything that I get a screen called "CS5.5 Master Collection Trial.

asking me my serial number. I enter a number and it says its not valid. How to solve this problem or who should I contact?

Hello

Please see the links below.

Hope this will help you.

Kind regards

Hervé Khare

Tags: Adobe

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