SOLR HTTP 500 Can't find resource 'solrconfig.xml' - solr

Question

I have Apache SOLR working with ColdFusion on my local machine, however, when I tried to make the move to production (environments are different), I keep getting the HTTP 500 message below. Production environment is using Ubuntu Lucid, Apache, ColdFusion 9.0.1. Using the version of SOLR installed with ColdFusion.
The path for solrconfig.xml in the error message, "/opt/jrun4/servers/prod-autofeed1/cfusion.ear/cfusion.war/WEB-INF/cfusion/collections/autofeed/conf/" is correct.
Any suggestions? Thank you.
HTTP ERROR: 500
Severe errors in solr configuration.
Check your log files for more detailed information on what may be wrong.
If you want solr to continue after configuration errors, change:
<abortOnConfigurationError>false</abortOnConfigurationError>
in solr.xml
-------------------------------------------------------------
java.lang.RuntimeException: Can't find resource 'solrconfig.xml' in classpath or '/opt/jrun4/servers/prod-autofeed1/cfusion.ear/cfusion.war/WEB-INF/cfusion/collections/autofeed/conf/', cwd=/opt/jrun4/servers/cfusion/cfusion-ear/cfusion-war/WEB-INF/cfusion/solr
at org.apache.solr.core.SolrResourceLoader.openResource(SolrResourceLoader.java:260)
at org.apache.solr.core.SolrResourceLoader.openConfig(SolrResourceLoader.java:228)
at org.apache.solr.core.Config.<init>(Config.java:101)
at org.apache.solr.core.SolrConfig.<init>(SolrConfig.java:130)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:405)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:278)
at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:117)
at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:83)
at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:99)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40)
at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:594)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:139)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1218)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:500)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40)
at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:147)
at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:161)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40)
at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:147)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:117)
at org.mortbay.jetty.Server.doStart(Server.java:210)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40)
at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:929)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.mortbay.start.Main.invokeMain(Main.java:183)
at org.mortbay.start.Main.start(Main.java:497)
at org.mortbay.start.Main.main(Main.java:115)
RequestURI=/solr/
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Answer 1

Double check permissions on the directory /opt/jrun4/servers/prod-autofeed1/cfusion.ear/cfusion.war/WEB-INF/cfusion/collections/autofeed/conf and the file /opt/jrun4/servers/prod-autofeed1/cfusion.ear/cfusion.war/WEB-INF/cfusion/collections/autofeed/conf/solrconfig.xml. If the user solr is run under can't read the dir/file, that'd do it. To test, you might even su to the user in question and simply try to cat the config file.