IdP stops generating user attributes.

[Nathan Friend]

Hello shibboleth users,
Our Shibboleth v3.2.1 IdP occasionally stops generating user attributes.  This can sometimes be resolved by restarting the server.  Restarting Tomcat alone does not appear to fix it.

When the server is not generating attributes the following error is recorded in the idl-process.log

2016-10-28 09:10:43,778 - ERROR [net.shibboleth.idp.profile.impl.ResolveAttributes:257] - Profile Action ResolveAttributes: Error resolving attributes
net.shibboleth.idp.attribute.resolver.ResolutionException: Attribute Definition 'eduPersonEntitlement': unable to execute script
   at net.shibboleth.idp.attribute.resolver.ad.impl.ScriptedAttributeDefinition.doAttributeDefinitionResolve(ScriptedAttributeDefinition.java:169)
Caused by: com.sun.phobos.script.util.ExtendedScriptException: org.mozilla.javascript.EcmaError: ReferenceError: "load" is not defined. (<Unknown Source>#1) in <Unknown Source> at line number 1
   at com.sun.phobos.script.javascript.RhinoCompiledScript.eval(RhinoCompiledScript.java:68)
Caused by: org.mozilla.javascript.EcmaError: ReferenceError: "load" is not defined. (<Unknown Source>#1)
   at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3687)

Memory load on the server looks OK.

Troubleshooting pointers would be appreciated.

Cheers,

Nathan.