Hi Roberto, Can you try this:

The suggestion is to to increase the desktop heap configuration via the registry.

Windows limits the amount of memory allocated to noninteractive users (such as kernels launched by webMathematica). When these kernels need to perform a calculation that requires the front end (example render a plot), the memory allocation setting may prevent the launching of the front end. To solve this problem, edit the registry.

HKEYLOCALMACHINE\System\CurrentControlSet\Control\Session Manager\SubSystems\Windows %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,3072,512 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ProfileControl=Off MaxRequestThreads=16 In the "SharedSection", the 3rd number can be deleted (512 above). This allows noninteractive users the same amount of memory as interactive users.

This is also documented under the Increasing Desktop Heap section at http://support.microsoft.com/kb/2102398

We tested this fix on "one" system we had available for this purpose and found success.

Let me know if this helps.

Let me know if worked for you too.

Yes.. it works! It's just change the path.

PS:Do not forget that it's commented in the standard MSPConfiguracion.xml file. It's not enough to change the name.

Mathematica 10 is not officially supported by webMathematica, but it can be made to work reasonably well.

Roberto, I'm guessing that you are using a Windows machine? If that's true, then the problem is that Mathematica 10's front end uses more memory than allowed by the default desktop heap setting for noninteractive users.

You can read more about it here: [http://support.microsoft.com/kb/2102398][1]

The short answer is that you can edit the registry to increase this value. Then the front end should work fine in webM.

Unfortunately, it doen't work for me. I tried deleting the value at all, as suggested by Rodrigo and then putting an hig value, as suggested in the MS support page (for instance 1024 or higher). It still gives the same error. I'm still investigating, I'll post any news. Thanks again

Yes. For Windows I did this to make de V10 kernel to work:

1. First install Mathematica 9
2. Make WebMathematica work on 9
3. Install version 10 and redirect to Mathematica 10 kernel in MSPConfiguration.xml file.
4. If last step work, now you can uninstall version 9.

And then, to make Graphics work (front end dependent expressions), I need to change windows regedit.

PS: in MAC, it didn't worked with JAVA 8, I needed to downgrade into java 7.

yes after each change in the registry I rebooted the machine, and I also tried to leave it blank, with the same (negative) result. I'll try a bigger value and then also the JLink suggestion, let you know.

Nice!... One more WebMathematica in V10.

I have done exactly the steps you mentioned. Now, if I change the path to 9.0 it works, when I change to 10.0 it doesn't. This is the corresponding code in MSPConfiguration.xml

<KernelPool> <KernelPoolName>General</KernelPoolName> <URLPattern>/*</URLPattern> </KernelPool>

<KernelExecutable>C:\Program Files\Wolfram Research\Mathematica\10.0\MathKernel.exe</KernelExecutable>

And this is the register key value

%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,1024 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16

Where I'm wrong? Thanks again

I don't have the steps, but I have success in make it work in RedHat. It was not easy to make front end to work. Front end instance is needed for make plots or file export to work.

Now webMathematica V3.3 has official support to Mathematica V10!

Check: http://www.wolfram.com/products/webmathematica/

1024, 20480, 768

seems to be needed for me (Windows 10, Mathematica 10.4.0 and newer)