Scala Eclipse Error

after the unsuccessful attempt to use Scala with NetBeans (Code Completion still doesn't work). I made up my mind and decided to try Eclipse. Due to the quarrels with NetBeans the path variable was already edited and I didn't expect any problems. Well, I was wrong.

1. I downloaded Eclipse Classic.
2. I read the instructions, how to setup the Scala IDE.
3. Following a youtube video, I installed all plugins available from this link http://www.scala-ide.org/
4. I created a new Scala project and added an object to it.

First a window appeared showing this information

An error has occurred. See error log for more details. java.lang.ExceptionInInitializerError

I looked开发者_开发知识库 in the error log, but I don't know what to do. There are four different errors.

1. Problems occurred when invoking code from plug-in: "org.eclipse.jface".
2. Widget disposed too early!
3. Unhandled event loop exception
4. Failure in presentation compiler

Pretty impressing isn't it ? What shall I do ?

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In reply to an earlier comment you say,

I downloaded version 3.6.1. I've don't think this is Helios already but I'm not sure. Moreover I downloaded the plugin from scala-ide.org. It was a stable build.stable build.

Eclipse 3.6.1 is Eclipse Helios. That means that you need to install the Helios-specific version of the Scala tooling from it's update site here ... this is pretty clearly flagged up on scala-ide.org: see the text "Experimental support for Eclipse 3.6 (Helios) is available" and the corresponding link. Alternatively you can revert to Eclipse 3.5.x (Galileo).

Also, please note that the best place to get support for the Scala IDE for Eclipse is the scala-ide-user mailing list ... I keep an eye on stackoverflow for questions like this, but in general you'll get a much faster and more reliable response if you post your questions to the right place.

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Try to invoke Eclipse with eclipse -clean then go to Window, Preferences, JDT Weaving and click Enable then restart your Eclipse and try creating a new Scala project again.

Let us know how was it.

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I invoked Eclipse with

eclipse -clean

but JDT Weaving was already enabled. I never changed its value so this is slightly confusing. Nevertheless I created a new Scala project and the same error ocurred. Additionally in the error log I found the message

The -clean (osgi.clean) option was not successful. Unable to clean the storage area: D:\Programme\eclipse\configuration\org.eclipse.osgi

What went wrong ? The command line didn't spit out any error message.

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At risk of being flamed....

Have you tried IntelliJ, it's free if you use the community edition and currently seems to have the strongest/most stable support for Scala of the 3 major (Java) IDEs.