Hi everyone,

it some time ago I got feedback from the technical support team that this will be fixed in a future release. Meanwhile, there are two versions of MMA10.1. I only have the OS X ones. On the computers on which I installed the file dated 24th March 2015 everything works fine. On the machines with the version from 27th April there is the problem with the EntityValueFramework.

So I think that it is indeed related to this post on StackExchange:

http://mathematica.stackexchange.com/questions/80630/mathematica-10-1-0-0-os-x-high-cpu-usage-even-for-empty-notebook

I suppose something else broke when the CPU issue was fixed.

Hope that an update will be available soon.

Cheers,

Marco

Hi Jeremy,

thanks for your help. That does not seem to be the problem. It does work on some of the functioning system with the same labelling of Mathematica's app-file; and if I change it to a "non-space" version. I believe that the naming convention comes directly from the Mathematica installation which adds the 2 if there is an older version of MMA installed.

In fact, It appears to be a problem with the Paclets rather than Java directly. The respective folders do not exist on the sick system.

Best wishes and thank you,

Marco

Ok. Transplanting the respective paclet folders does not work either. The folder in the broken MMA10.1 is much smaller than in the functional one.

It appears that only WRI will be able to help out here....

Cheers,

Marco

PS: It still bugs me that sometimes it appears to be working.

Hi,

they are looking into this and are aware of the issue. I got the same suggestion, but it does not fix it.

I will try "transplanting" the folder from a healthy system. Perhaps that fixes it?

Cheers and thanks,

Marco

My installation directory is

"/[InvisibleSpace]Applications/[InvisibleSpace]Mathematica.app/\ [InvisibleSpace]Contents"

and there are lots of files in it. Not sure why your app is called Mathematica 2.app.

Unfortunately, I did not do SystemInformation[] when my system was not working.

The last e-mail I got from tech support was that the developers were looking into the problem. I think you have found an important clue. On the off chance that the developers are not aware of this thread, I suggest that you send them both SystemInformation[] outputs. (I already sent my SystemInformation[] data for my working installation, and I do not have the 'before' version.)

With so many files, etc., apparently missing, there my be other functionality not working.

Anyway, this may point to a solution....

george

Great! That leaves me stranded. I have uninstalled Java; Mathematica does not work. I have deleted Mathematica and reinstalled. Mathematica does not work. I have reinstalled Java 8 (JDK) Mathematica does not work. I have deleted Mathematica and reinstalled it; it does not work. I also tried older versions of Java. Does not work either.

I will probably get the same piece of advice from TechSupport, and it will not work for me. I am not really sure what Voodoo suggests in these cases...

Cheers,

M.

OK.

Can you let us know in the community what worked (assuming you find out). We may be in a similar position some day.

Perhaps the Java solution just applied to Macs -- Apple has been trying to wean users away from Java for the last couple OS releases.

Hi,

thanks a lot for looking into this problem.

I followed your guidelines, George, but for me it unfortunately does not solve the problem. I tried various computers by now, I have the problem on all of them.

Best wishes and thanks for your help

Bjoern

It seems that something might be generally wrong with accessing curated data from MMA 10.1. This is from the documentation of StarData:

But when trying out the example, the result is less than informative:

Tried this on two different PC's. One W7, the other W8.1

The input of EntityProperties["Aircraft"] just returns the input. On both PC's.

On one of them I have tried to:

• Reset Mathematica according to KB12464. The problems remained.
• Uninstalled and then reinstalled Mathematica 10.1. Still the problems remains.

Hi Marco

Where do I find info on my version of Java?

(Java is not listed under Programs and Features. W 8.1)

This bugs me now. It works on one computer, but not on another one:

The Java version is from Oracles website. I have removed the ~/Library/... folder and reinstalled everything. Restarted the computer several times. This is on OS X 10.10.3 with MMA 10.1. Same versions do appear to work on another system I have.

MMA 10.0.2 on the exact same system works very nicely.

Best wishes,

Marco

Dear Sean,

thank you for your help. I am aware that they should be the same but the format without the yellow boxes does not evaluate - sorry I should have made that clearer. It is like in this post. If you ask for, say the population size, you do get an unevaluated function. In the "good" system you get the population size.

I cannot really pin the problem down. Mathematica works as expected on my 15+ computers. But it appears that on all the ones of a colleague it has issues. We are working with academic licenses. Some days ago we bought a Standard (commercial) license each for my colleague and myself. It is installed on a Windows server, where I first noticed the problem. When we checked my colleague's computers (>5 independent machines), they all had problems. Also one of hist Post-docs seems to have the exact same problem. First we thought that it might be because they run a more recent version of Java, but that does not explain it. (Downgrading Java and new install does not fix it.)

Also I have noticed that there could be a server issue at least contributing to the problem. I don't think that this explains it all. Here is what I see on one of the one for the problematic system:

And then the one for the ok system:

This is curious because both computers are connected to the internet. They are in the same network and have the same network config as far as I can see. I have not had the time to test this systematically though. BTW, I would to ask for the population of Berlin like that with an "=" sign at the beginning, but if I do it in the standard way with EntityValue, I do just get the input unevaluated.

Anyway, on the good system, the "plain text command" and the orange box one seem to evaluate fine. On the other system they do not.

Oh, yes, on all systems, when I use the Preferences tab to check the internet connectivity, all systems say that they can connect to the Wolfram server.

Best wishes and thanks again for your help,

Marco

Hi

then I do not understand what you are looking for. Does it not look like this:

This is expected behaviour, I believe. That looks just like in the Documentation, does it not? What happens when you do it? When you say the same expressions are returned, do you mean that they are not evaluating? Do you have a screenshot? Have you restarted the Kernel?

Cheers, Marco

Thanks, but this also does not work. The same expression is returned. Weird!

Regards,

Rangarajan