Mac OS forum


Photoshop CS5 Fails to load with Lion OS

by montecom / July 22, 2011 6:00 AM PDT

I just upgraded to Lion 10.7 and tried to use Photoshop CS5. I got the following message on the pop-up screen: "To open Photoshop CS5 you need to install java runtime, but you are not connected to the internet..." Obviously, I am connected to the internet by sending this message. Is anyone familiar with this issue?

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All Answers

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Re: java
by Kees_B Forum moderator / July 22, 2011 6:05 AM PDT

Do you have the java runtime installed? And it doesn't harm to install the latest version from


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Java on Mac OS X
by Jimmy Greystone / July 22, 2011 8:35 AM PDT
In reply to: Re: java

Java on Mac OS X is a bit different from every other platform. Apple releases their own heavily modified (but blessed by Sun and now Oracle) JVM via their Software Update system.

It is true that by installing 10.7 it will wipe out any JVM you may have had installed on 10.6, but fortunately Apple decided to reverse course somewhat, and a JVM can be downloaded for 10.7. The first time you try and run some program that needs it, you should be prompted to download it.

Eventually Apple wants to do away with this and just let people use the OpenJDK JVM, but it was nowhere near ready by the time of Lion's release so Apple is in something of a holding pattern. I wouldn't expect too many, if any, updates to the Mac OS X JVM in the coming days, unless there's some major security issue found in the JDK and the OpenJDK people still haven't managed to pull their act together.

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Adobe has listed known problems
by Jimmy Greystone / July 22, 2011 8:30 AM PDT
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Switch off your automatic proxy detection
by BlatN / July 27, 2011 7:58 AM PDT

I faced the same, but after switching off the automatic proxy detection in the system preferences/network I could download and install the Java Runtime.

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just as an aside,
by mrmacfixit Forum moderator / July 27, 2011 9:54 AM PDT

Automatic proxy detection is not on by default.

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