neo4j エンタープライズ 1.8.1 をダウンロードしたばかりで、サーバーを起動して Web 管理にアクセスしようとしています。これが起こることです：
$ bin/neo4j start
Starting Neo4j Server...16:56:10,175 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
16:56:10,175 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
16:56:10,176 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [jar:file:/Users/sharpei/Downloads/neo4j-enterprise-1.8.1/system/lib/neo4j-server-1.8.1.jar!/logback.xml]
16:56:10,198 |-INFO in ch.qos.logback.core.joran.spi.ConfigurationWatchList@7786df0f - URL [jar:file:/Users/sharpei/Downloads/neo4j-enterprise-1.8.1/system/lib/neo4j-server-1.8.1.jar!/logback.xml] is not of type file
16:56:10,262 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
16:56:10,268 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
16:56:10,272 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [STDOUT]
16:56:10,288 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
16:56:10,336 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to INFO
16:56:10,336 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[ROOT]
16:56:10,338 |-ERROR in ch.qos.logback.core.joran.action.IncludeAction - Could not find resource corresponding to [custom-logback.xml]
16:56:10,339 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@379e8f17 - Registering current configuration as safe fallback point
process [50657]... waiting for server to be ready...... OK.
Go to http://localhost:7474/webadmin/ for administration interface.
webadmin の URL にアクセスしようとすると、空白のページが表示されます。エラーも何もありません。ここでさまざまなログをグーグルで検索してみましたが、何も思いつきませんでした。何か案は？