install error missing jre use 0.8.1 sd card creater

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install error missing jre use 0.8.1 sd card creater

Postby jy1989 » Fri Apr 25, 2014 4:40 pm

according the installtion document step by step

http://sourceforge.net/p/lejos/wiki/Win ... tallation/

I create the sd card image, it seems every thing is ok

but when I plug the sd card in my ev3 , it show the error: install error missing jre

and then power off, so whats the problem? thank you..
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Re: install error missing jre use 0.8.1 sd card creater

Postby gloomyandy » Fri Apr 25, 2014 4:56 pm

It means what it says you have not copied a jre file to your SD card. What JRE did you select? Please make sure you select a Java 7 JRE not a Java 8 JRE, Java 8 is not currently supported by leJOS.
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Re: install error missing jre use 0.8.1 sd card creater

Postby jy1989 » Fri Apr 25, 2014 5:09 pm

gloomyandy wrote:It means what it says you have not copied a jre file to your SD card. What JRE did you select? Please make sure you select a Java 7 JRE not a Java 8 JRE, Java 8 is not currently supported by leJOS.



oh, so I know the probleam, I select jre 8... thank you for your answer
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Re: install error missing jre use 0.8.1 sd card creater

Postby aprendiendo » Sun Aug 03, 2014 12:02 pm

I get the "missing jre" error message using the jdk 7. http://www.oracle.com/technetwork/java/ ... 80260.html (jdk-7u65-windows-i586.exe). I have tryied to install it several time without success, what I'm doing wrong?
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Re: install error missing jre use 0.8.1 sd card creater

Postby gloomyandy » Sun Aug 03, 2014 2:18 pm

You need a JRE for the EV3, the link you are trying to use is a JDK for Windows. You can download the JRE from here:
http://java.com/legomindstorms
note that you need the Java 7 JRE not the Java 8 JDK from this page. The .gz file that you download needs to be copied to the FAT32 SD card either manually (if on Linux/MacOs) or using the instaler (Windows).

So that we can fix this problem for other users, what made you think that the JDK link you have been trying to use was the file you required? What instructions have you been following, what operating system are you using? The Wiki contain details of how to install for Windows:
https://sourceforge.net/p/lejos/wiki/Wi ... tallation/
and for Linux/Mac
https://sourceforge.net/p/lejos/wiki/In ... g%20leJOS/
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Re: install error missing jre use 0.8.1 sd card creater

Postby aprendiendo » Mon Aug 04, 2014 7:59 am

Thanks!

Yeah, I followed your wiki instructions, http://sourceforge.net/p/lejos/wiki/Win ... tallation/

I used the windows jdk 7 for this step:
Image

And the proposed and the Oracle download for this step:
Image
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Re: install error missing jre use 0.8.1 sd card creater

Postby gloomyandy » Mon Aug 04, 2014 9:33 am

Did you follow my instructions given above to download the JRE for ARM? What was the file you ended up selecting in the second stage (the one you select using the JRE button)? Please provide the full file name.
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Re: install error missing jre use 0.8.1 sd card creater

Postby aprendiendo » Mon Aug 04, 2014 10:12 am

Thanks again!

Yes, I followed your instructions. In fact I have been using LeJOS with Linux Mint flawlessly, it worked without problems. But having some Mint problems I'm using now my Win7 x64 partition...

I will remove the Java JDKs and EV3 and will install it again...
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Re: install error missing jre use 0.8.1 sd card creater

Postby aprendiendo » Wed Aug 06, 2014 8:43 am

Working!

Thanks, gloomyandy!
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