illustrator CS4 plugin problem after upgrade to OS X Yosemite

‌There is a fix here:

Release Yosemite AICS4 Fix · ralvarezt/aics4_yosemite_fix · GitHub

I've tried it and it seems to work. Here's what I did:

1) Installed OS 10.11 Beta on a partition of an external drive (I decided to try El Capitan Beta instead of Yosemite, since by the time I buy new hardware El Capitan will be released).

2) Booted into OS 10.11 and installed CS4 Photoshop, Illustrator, and all support files and recommended applications.

3) Installed Java for OS X 2015-001(if you start Illustrator without this, you will get a prompt and link to the file on apple.com)

4) Ran Yosemite AICS4 Fix.mpkg

5) Apple>System Preferences>Accessibility>Display>ReduceTransparency (fixes the font menus, so that you can see the font names and previews)

6) Opened Illustrator and Photoshop with no problem.

7) Created eight test files in Photoshop (all possible combinations of CMYK and RGB, layered and flat, TIFF and PSD), imported them into an Illustrator file, and saved. They all worked.

Many thanks to Raúl Álvarez and Benjamin Fleisher. No bucks for Adobe CC.

For more, including an explanation from the author, see: Illustrator CS4 crash with Mac OS X.10 Yosemite (scroll down to July 7, 2015 post)

Hello,

I have found a "partial solution" to this problem.

First, update your legacy Java 6 on your mac.

Java Archive Downloads - Java SE 6

This may get rid of the plugin problem "for a season."

What I must do now, and I admit it is painfully annoying, is open Photoshop first, then while Photoshop is open, I open up Illustrator.

The same plug-in problem appears, but now it is "click-able" and you can use illustrator as normal. - Hope this helps.

I too have just been stung by this issue. Adobe, please create an update to allow Illustrator CS4 to work again with MacOS!

Count me in - I am experiencing the same problem.

Launching Photoshop first is the only way for get Illustrator working on.

(Mac OS 10.10.2 with CS4)

The issue most of us are having is not being able to import a .psd file in to a .ai doc.

All

I found this answer to the problem elsewhere on the Adobe Forums. This worked for me:

> I had the same problem.  Frustrating right?  Here's what worked for me.

> Find a file .pdf on your computer, preferably one created on adobe illustator.  Click on it whilst holding down the 'control key'. The options menu should come up saying 'Open with'.

> Scroll to there and open with Adobe Illustrator.

> You may still have the missing plugin warning.  Click 'okay', and it will ignore it (before it just froze, right?) Then Illustrator will open as normal.

> I hope this works for you as well.

I've been having the same issue as originally stated. I'm on OS X Yosemite 10.10 and Illustrator won't open. I tried to open Photoshop first and then Illustrator without luck.  I do believe this is an Apple Issue and as I read the forum, there is no successful outcome.

Had a new thought... perhaps the best approach (haven't taken time to do it yet) would be to contact Apple about how their new operating system has made our software unusable and see if they can be of any help?....

Having the same problem and now the program wont even open. Need help as I am desperate to make labels for my company.

Thanks jawshoowa !! The font issue bugged me more than the photoshop import issue. This fixed it.