Building DEX failed error (Java up to date?)

[esdin]

I’m currently experiencing a Building DEX failed error on a project. To my knowledge, java is up to date.
I’m getting the following error log from Unity during the post process phase of the build process.

Building DEX Failed! Unity Error - Pastebin.com

If anyone has any experience with this, or any insight, help would be greatly appreciated. Thank you!

[happyhopper]

I just got this too. It isn’t allowing me to build my project! >_<

[koki]

Hi, i’m getting this too. It seems to happen only with one of my jar files, when i remove this jar everything works again. Any idea?

[sriram90]

Hey guys…

The solution is you need to update the java version in your machine… Because the same error occurred to me… and i just download the java for mac os X and updated. now its worked well.

Building DEX Failed

This an error which will present itself similar to this

Building DEX Failed!
G:\Unity\JavaPluginSample\Temp/StagingArea> java -Xmx1024M
-Djava.ext.dirs=“G:/AndroidSDK/android-sdk_r09-windows\platform-tools/lib/”
-jar “G:/AndroidSDK/android-sdk_r09-windows\platform-tools/lib/dx.jar”
–dex --verbose --output=bin/classes.dex bin/classes.jar plugins
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
This is usually caused by a bad version of Java being installed on your machine. Try updating your Java install to the latest version and this will generally solve this issue.

u can refer this in to this link , go to android u’ll get answer
http://unity3d.com/support/documentation/Manual/TroubleShooting.html

[anon_84066690]

as the OP states in the topic title that his java version is up to date, I’m guessing the above solution didn’t work?

another possible cause for this is having spaces in your project folder name / path… Try taking them out and rebuild.

[Platinium]

Well im gonna be honest i have the exactly same problem and my java is updated, and one way i found to resolve this issue, is simply to: 1- Close Any chrome window opened LOL thats right;
2- If the above doens`t work i close monoDevelop and works for 90% of the times.
3-If it still dont want to work simply restart unity and do step 1;

I don`t know why this happens but for me this always works removing the DEX error on Build :s;

[JoshOClock]

I’ve run into this a couple times recently, so wanted to add my findings.

My particular issue is related to Prime31 Plug-Ins. But more exactly I think the fact that sometimes there are conflicting jar files in my Plug-ins/Android folder.

I usually get this when I update my Prime31 Plug-ins and there seem to be old .jar files in the plug-ins/android folder. If I clear out the old ones and reinstall the plug-in this fixes it.

[uldvey_1]

i had the same issue. the problem was, that i worked with an older version of unity (3.5) and the actual android sdk version did´nt fit to this old unity version.
upgrade unity to newest version and the problem should be solved. (it worked with me)