serialnumber to start PHotoshop

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Mylenium

Serial # consist of 24 digits plus the hyphons after each 4 digits  ( ####-@@@@-^^^^-&&&&-****-++++ )  . I assume you are double checking before continuing to make sure all #s are listed correctly and in order . Make sure there is no extra spaces in the serial # and make sure there is no space in the begining before the serial # . Make sure the correct serial # for the version your installing and not from a previous version . Make sure your installing under Administrator Privilages . If you downloaded and installed the Trial version and then using the Serial# from the box it may not work if you ordered a DVD from Adobe . Uninstall the trial version , install from the DVD then insert the Serial # from the box from Adobe . If all the above fail then i suggest you contact Support at adobe.com .