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I have downloaded the Workbench 2.0.0 zip file and followed the install new software -> add -> archive steps to install the workbench plugin. After that, the Workbench core and webMathematica tools are listed as already installed. I installed the plugin into a 3.8 vintage eclipse.

When I try to "Run" a notebook in a Mathematica projects (basic or application) I get the following error message:

FrontEnd Job:: Open Notebook has enountered a problem. An internal error occurred during::FrontEnd Job::Open Notebook.

Details: an internal error occurred during: "FrontEnd Job::Open Notebook". com.wolfram.jlink.NativeLink.MLOpenString(Ljava/lang/String;[Ljava/lang/String;)J

I believe I have the right path to the Mathematica executable (when I change the path to point to a non existing file, I get a message that says to adjust the path).

Most postings on this site suggest that 32-bit is the only workable solution while at least one post indicated that there is a workaround for 64-bit machines.

I'd rather use 64-bit kepler (4.2 vintage eclipse). Is that possible?

I couldn't find the details from the one posting that indicated 64-bit is possible. Can someone provide the details?

share|improve this question
What version of Mathematica are you trying to run? I've had some troubles with 6.0.1 and Workbench, because 6.0.1 doesn't fully support 64-bit JVM's afaik. That was on a Mac though, so I'm not sure how relevant it is for your case. –  Teake Nutma Jun 12 '13 at 17:21
@teakeNutma I am using Mathematica –  gary Jun 12 '13 at 22:15
I have this problem sometimes, for example today, windows 8.1 x64@Mathematica 10.0 workbench2 –  HyperGroups Jan 20 at 11:30

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