Trying to install CS4 on macbook pro. VALID serial number comes up as" INVALID." Need help.

[Guest]

Trying to install CS4 on macbook pro. VALID serial number comes up as" INVALID." Need help.

[Kanikas · Accepted solution]

HI,

Please see this link for details: Invalid serial number error

Hope this helps !!!

[Guest]

Valid Serial Number rejected as "Invalid": I followed your instructions for installing on a trial basis, but was able to install only a few of the CS4 items. Adobe Illustrator, which I use mostly, did not seem to be available as a reinstall item.

[John T Smith]

This information is a MUST DO to install old programs on Mac El Capitan

-you may not get the same error message, but these two links will help with old programs

Install CS5 on Mac 10.11 https://forums.adobe.com/thread/2003455 may help (also for other than CS5)

-also a TEMPORARY security change https://forums.adobe.com/thread/2039319

FAQ about Mac 10-11 https://forums.adobe.com/thread/1979303

There are known problems with Mac 10.11 El Capitan... that may be one of them

-Java https://helpx.adobe.com/dreamweaver/kb/dreamweaver-java-se-6-runtime.html

-See reply #5 in https://forums.adobe.com/thread/1965850 for several solution links