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I am trying to use Mark Caprio's LevelScheme package for customizing graphics, but I haven't been able to get Mathematica to load the package using Get or Needs, which return the following errors:

Get::noopen: Cannot open C:\Users...\Mathematica\Applications\LevelScheme.>>

Needs::nocont: Context LevelScheme` was not created when Needs was evaluated. >>

The package is installed in $UserBaseDirectory under "Applications" alongside a number of other packages that are working fine (Win7, Mma 10.2). What is causing this problem?

Same issue observed with Mathematica 8:

... downloaded and unzipped package from the website, saved it in a folder and appended this folder to Mathematica's search path using: 

AppendTo[$Path, "/Users/alessandromanzotti/Downloads/LevelScheme"]

{"/Applications/Mathematica.app/SystemFiles/Links",
"/Users/alessandromanzotti/Library/Mathematica/Kernel",
"/Users/alessandromanzotti/Library/Mathematica/Autoload", "/Users/alessandromanzotti/Library/Mathematica/Applications", "/Library/Mathematica/Kernel", "/Library/Mathematica/Autoload", "/Library/Mathematica/Applications", ".", "/Users/alessandromanzotti", "/Applications/Mathematica.app/AddOns/Packages",
...
"/Users/alessandromanzotti/Work/Software/Mathematica/LevelScheme", \ "/Users/alessandromanzotti/Downloads/LevelScheme"}

Everything seems OK

SetDirectory["/Users/alessandromanzotti/Downloads/LevelScheme"]; 
FileNames[] ‌

​{"BlockOptions", "ClipToRectangle"​, "CustomTicks", "doc"​, ".DS_Store",
"ForEach"​, "InheritOptions"​, "Kernel" ‌​, "LevelScheme" ‌​, "NamedColors"​}

But I get an error using Get["LevelScheme"]`.

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  • $\begingroup$ Try putting it in your Program files->Wolfram Reasearch->Mathematica->8.0->AddOns->Packages...and restart Mathematica...in case it doesn't work remove it from there. $\endgroup$
    – Pankaj Sejwal
    Commented Jul 8, 2013 at 15:13
  • $\begingroup$ @Blackbird. OP is using OS X. Your suggestion won't work there; Mathematica file structure is different there. $\endgroup$
    – m_goldberg
    Commented Jul 8, 2013 at 16:23
  • $\begingroup$ @m_goldberg: ya I noticed later but I left the comment so that might be helpful to someone in future. Thanks for correcting me. $\endgroup$
    – Pankaj Sejwal
    Commented Jul 8, 2013 at 16:24

3 Answers 3

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I faced this same problem. I tried all of the answers mentioned but none of them worked. Finally figured it out.This is what I did:

Firstly after you download the LevelScheme zip file extract it anywhere. In my case(Ubuntu) I extracted it at Desktop.So this is the folder contents after extraction:

enter image description here

Then you run this to find your Basedirectory

  FileNameJoin[{$UserBaseDirectory, "Applications"}]

I found mine to be in my home directory under .Mathematica/Applications

Then you simply cut all the folders from above and paste it into the Base directory just found. So in my case after pasting it was like this: enter image description here

Then you have to load them one by one in any order keeping LevelScheme last. So like I did this(You may get an error message here but that can be neglected):

Get["CustomTicks`"]
Get["BlockOptions`"]
Get["ClipToRectangle`"]
Get["CustomTicks`"]
Get["ForEach`"]
Get["InheritOptions`"]
Get["NamedColors`"]

And finally this 

Get["LevelScheme`"]

enter image description here

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  • 1
    $\begingroup$ Yup, the zip package actually contains several packages. Btw, you don't have to load the other packages before LeveScheme, as they are loaded automatically by Get["LevelScheme"]`. $\endgroup$
    – Ajasja
    Commented Sep 2, 2013 at 16:00
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    $\begingroup$ This works but you need not to load all the packages manually, it is sufficient just to load Get["LevelScheme`"] $\endgroup$
    – Alexey Popkov
    Commented Sep 3, 2013 at 5:09
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Let me make a guess: When you append "/Users/alessandromanzotti/Downloads/LevelScheme" to your $Path, then it is not possible to load LevelScheme` because no sub-directory contains a package named LevelScheme.

Please try the following: Copy the whole LevelScheme directory to 

"/Users/alessandromanzotti/Library/Mathematica/Applications"

so that you have a LevelScheme subdirectory under Applications which contains all its content. Then the package loading should work.

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    $\begingroup$ I have a copy of the whole levelScheme folder in "/Users/alessandromanzotti/Library/Mathematica/Applications" but still, I can not get it... I get the error Get::noopen: Cannot open LevelScheme. if this can help. $\endgroup$
    – user1697991
    Commented Aug 15, 2013 at 22:01
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    $\begingroup$ @user1697991: I'm experiencing the same error. Needs["LevelScheme``", FileNameJoin[{$UserBaseDirectory, "Applications\\LevelScheme"}]] Just installed LevelScheme package in Applications directory ... everything should work, but Get and Needs both return "noopen : Cannot open C\:Users\ ...". This is on Win7, running 10.2 -- maybe it's a permissions issue? $\endgroup$
    – dionys
    Commented Jul 22, 2015 at 10:40
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Appending to the $Path is not a good idea, because it doesn't change $Path permanently. You would have to evaluate the Append expression in new session where you planned to use the package. Best to move the package to a standard folder already on $Path. An appropriate folder would be found by evaluating 

FileNameJoin[{$UserBaseDirectory, "Applications"}]
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  • $\begingroup$ In my recent (2 minutes ago) case I had to add all the individual directories to \$Path first and then finally the top level LevelScheme directory itself. If the LevelScheme directory is before the LevelScheme/LevelScheme directory I run into infinite recursion when executing Get["LevelScheme`"]. With $Path in the correct order all seems well. Documentation is quite misleading here (writing docs is very dull I know ;). $\endgroup$
    – Ymareth
    Commented Feb 21, 2014 at 22:49

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