Design Standard CS5 - Damaged file download and can't be opened

hello,

 

i bought new mac no dvd reader. tried download cs5 design standard  link provided (https://helpx.adobe.com/fr/creative-suite/kb/cs5-product-downloads.html ). however, after "designstandard_cs5_ls1.dmg" file has been downloaded , click on "install", following message appears:

 

“install” damaged , can’t opened. should eject disk image.

 

can please?

 

laetitia

you have mac osx 10.12 sierra installed , has problems older adobe products.

 

you have use terminal.app start install.

 

so start terminal.

 

right or control-click on install.app , select "show package contents.

 

inside macos folder install. drag terminal window , see text command.

 

press enter start install. enter password if asked.

 

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