gistfile1.txt

// Grails 2.0.4

grails.project.dependency.resolution = {
    // inherit Grails' default dependencies
    inherits("global") {
        // uncomment to disable ehcache
        // excludes 'ehcache'
    }
    log "error" // log level of Ivy resolver, either 'error', 'warn', 'info', 'debug' or 'verbose'
    checksums true // Whether to verify checksums on resolve

    repositories {
        inherits true // Whether to inherit repository definitions from plugins
        grailsPlugins()
        grailsHome()
        grailsCentral()
        grailsRepo("http://svn.codehaus.org/grails-plugins", "grailsCore2")
        mavenCentral()
    }
    dependencies {
        compile 'org.apache.mina:mina-core:2.0.4',
                'org.apache.sshd:sshd-core:0.6.0',
                'org.apache.sshd:sshd-pam:0.6.0'
        compile('org.codehaus.griffon:griffon-rt:0.9.5-rc2',
                'org.codehaus.griffon:griffon-cli:0.9.5-rc2') {
            transitive = false
        }
        runtime 'postgresql:postgresql:9.0-801.jdbc4'
    }

    plugins {
        test    ":code-coverage:1.2.5",
                ":spock:0.6"
        compile ":hibernate:$grailsVersion",
                ":jquery:1.7.1",
                ":resources:1.1.6",
                ":avatar:0.5.2",
                ":commentable:0.8.1",
                ":email-confirmation:1.0.5",
                ":executor:0.3",
                ":jcaptcha:1.2.1",
                ":mail:1.0",
                ":markdown:1.0.0.RC1",
                ":quartz:0.4.2",
                ":rateable:0.7.1",
                ":taggable:1.0.1",
                ":twitter-bootstrap:1.4.0.12",
                ":twitter4j:0.2",
                ":webxml:1.4.1",
                ":yui:2.8.2.1",
                ":yui-minify-resources:0.1.5",
                ":zipped-resources:1.0",
                ":cached-resources:1.0",
                ":cache-headers:1.1.5"

        build ":tomcat:$grailsVersion",
              ":svn:1.0.2"
    }

Odd. Why is svn declared explicitly? Anyway, I'll fork and add an exclusion. The Twitter Bootstrap plugin needs republishing so that its POM doesn't include svn, but an exclusion will immediately improve matters for you.