Clover-for-Grails generates an exception when using the -clover.view option on the Grails command line.

C:\grails-1.2.1\samples\petclinic>grails test-app -clover.on -clover.view
Welcome to Grails 1.2.1 - http://grails.org/
Licensed under Apache Standard License 2.0
Grails home is set to: C:\grails-1.2.1

Base Directory: C:\grails-1.2.1\samples\petclinic
Resolving dependencies...
Dependencies resolved in 2641ms.
Running script C:\grails-1.2.1\scripts\TestApp.groovy
Environment set to test
Clover: Using config: [on:true, view:true]
Using clover license path: C:\Documents and Settings\Giles Gaskell\.grails\1.2.1\projects\petclinic\plugins\clover-0.2\grails-app\conf\clover\clover-evaluation.
license
[clover-env] Loading clover.xml: jar:file:/C:/Documents%20and%20Settings/Giles%20Gaskell/.ivy2/cache/com.cenqua.clover/clover/jars/clover-3.0.0-m3.jar!/clover.x
ml
Using default clover-setup configuration.
Clover:
               directories: [src/java, src/groovy, test, grails-app]
               includes:    [**/*.groovy, **/*.java]
               excludes     [**/conf/**, **/plugins/**]
[clover-setup] Clover Version 3.0.0-m3, built on February 26 2010 (build-780)
[clover-setup] Loaded from: C:\Documents and Settings\Giles Gaskell\.ivy2\cache\com.cenqua.clover\clover\jars\clover-3.0.0-m3.jar
[clover-setup] Clover Evaluation License registered to Clover Grails Plugin.
[clover-setup] You have 23 day(s) before your license expires.
[clover-setup] Clover is enabled with initstring 'C:\Documents and Settings\Giles Gaskell\.grails\1.2.1\projects\petclinic\clover\db\clover.db'
Clover: Forcing a clean to ensure Clover instrumentation occurs. Disable by setting: clover.forceClean=false
   [delete] Deleting directory C:\grails-1.2.1\samples\petclinic\target\classes
   [delete] Deleting directory C:\grails-1.2.1\samples\petclinic\target\test-classes
   [delete] Deleting directory C:\Documents and Settings\Giles Gaskell\.grails\1.2.1\projects\petclinic\clover
Clover: Compile start.
    [mkdir] Created dir: C:\grails-1.2.1\samples\petclinic\target\classes
  [groovyc] Compiling 2 source files to C:\grails-1.2.1\samples\petclinic\target\classes
[clover-setup] Creating new database at 'C:\Documents and Settings\Giles Gaskell\.grails\1.2.1\projects\petclinic\clover\db\clover.db'.
  [groovyc] Compiling 17 source files to C:\grails-1.2.1\samples\petclinic\target\classes
[clover-setup] Creating new database at 'C:\Documents and Settings\Giles Gaskell\.grails\1.2.1\projects\petclinic\clover\db\clover.db'.
    [mkdir] Created dir: C:\grails-1.2.1\samples\petclinic\target\test-reports\html
    [mkdir] Created dir: C:\grails-1.2.1\samples\petclinic\target\test-reports\plain

Starting unit test phase ...
    [mkdir] Created dir: C:\grails-1.2.1\samples\petclinic\target\test-classes\unit
  [groovyc] Compiling 1 source file to C:\grails-1.2.1\samples\petclinic\target\test-classes\unit
[clover-setup] Updating existing database at 'C:\Documents and Settings\Giles Gaskell\.grails\1.2.1\projects\petclinic\clover\db\clover.db'.

-------------------------------------------------------
Running 1 unit test...
Running test org.grails.samples.OwnerControllerTests...PASSED
Tests Completed in 2015ms ...
-------------------------------------------------------
Tests passed: 6
Tests failed: 0
-------------------------------------------------------

Starting integration test phase ...
     [copy] Copying 1 file to C:\grails-1.2.1\samples\petclinic\target\test-classes\integration
     [copy] Copying 1 file to C:\grails-1.2.1\samples\petclinic\target\test-classes
     [copy] Copied 3 empty directories to 2 empty directories under C:\grails-1.2.1\samples\petclinic\target\test-classes
Clover: Compile start.
  [groovyc] Compiling 1 source file to C:\grails-1.2.1\samples\petclinic\target\classes
[clover-setup] Updating existing database at 'C:\Documents and Settings\Giles Gaskell\.grails\1.2.1\projects\petclinic\clover\db\clover.db'.
     [copy] Copying 1 file to C:\grails-1.2.1\samples\petclinic\target\classes
Clover: Compile start.
  [groovyc] Compiling 1 source file to C:\grails-1.2.1\samples\petclinic\target\classes
[clover-setup] Updating existing database at 'C:\Documents and Settings\Giles Gaskell\.grails\1.2.1\projects\petclinic\clover\db\clover.db'.
[junitreport] Processing C:\grails-1.2.1\samples\petclinic\target\test-reports\TESTS-TestSuites.xml to C:\DOCUME~1\GILESG~1\LOCALS~1\Temp\null1750708552
[junitreport] Loading stylesheet jar:file:/C:/Documents%20and%20Settings/Giles%20Gaskell/.ivy2/cache/org.apache.ant/ant-junit/jars/ant-junit-1.7.1.jar!/org/apac
he/tools/ant/taskdefs/optional/junit/xsl/junit-frames.xsl
[junitreport] Transform time: 735ms
[junitreport] Deleting: C:\DOCUME~1\GILESG~1\LOCALS~1\Temp\null1750708552

Tests PASSED - view reports in target\test-reports
Clover: Tests ended
[clover-historypoint] Clover Version 3.0.0-m3, built on February 26 2010 (build-780)
[clover-historypoint] Loaded from: C:\Documents and Settings\Giles Gaskell\.ivy2\cache\com.cenqua.clover\clover\jars\clover-3.0.0-m3.jar
[clover-historypoint] Clover Evaluation License registered to Clover Grails Plugin.
[clover-historypoint] You have 23 day(s) before your license expires.
[clover-historypoint] Writing report to 'C:\grails-1.2.1\samples\petclinic\.cloverhistory\clover-20100305112533.xml.gz'
[clover-html-report] Clover Version 3.0.0-m3, built on February 26 2010 (build-780)
[clover-html-report] Loaded from: C:\Documents and Settings\Giles Gaskell\.ivy2\cache\com.cenqua.clover\clover\jars\clover-3.0.0-m3.jar
[clover-html-report] Clover Evaluation License registered to Clover Grails Plugin.
[clover-html-report] You have 23 day(s) before your license expires.
[clover-html-report] Not overwriting existing history point 'C:\grails-1.2.1\samples\petclinic\.cloverhistory\clover-20100305112533.xml.gz'. To force, set overw
rite="true".
[clover-html-report] Loading coverage database from: 'C:\Documents and Settings\Giles Gaskell\.grails\1.2.1\projects\petclinic\clover\db\clover.db'
[clover-html-report] Loading historical coverage data from: 'C:\grails-1.2.1\samples\petclinic\.cloverhistory'
[clover-html-report] Writing HTML report to 'C:\grails-1.2.1\samples\petclinic\build\clover\report'
[clover-html-report] Done. Processed 1 packages in 3047ms (3047ms per package).
[clover-html-report] Writing historical report to 'C:\grails-1.2.1\samples\petclinic\build\clover\report'
[clover-html-report] Read 3 history points.
[clover-html-report] using movers interval of 18 hours
[clover-html-report] using movers interval of 18 hours
[clover-html-report] Writing JSON historical-data to: C:\grails-1.2.1\samples\petclinic\build\clover\report\historical-json.js
[clover-html-report] Done.
Error executing script TestApp: java.lang.StringIndexOutOfBoundsException: String index out of range: 1
gant.TargetExecutionException: java.lang.StringIndexOutOfBoundsException: String index out of range: 1
        at gant.Gant$_dispatch_closure4.doCall(Gant.groovy:331)
        at gant.Gant$_dispatch_closure6.doCall(Gant.groovy:334)
        at gant.Gant$_dispatch_closure6.doCall(Gant.groovy)
        at gant.Gant.withBuildListeners(Gant.groovy:344)
        at gant.Gant.this$2$withBuildListeners(Gant.groovy)
        at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
        at gant.Gant.dispatch(Gant.groovy:334)
        at gant.Gant.this$2$dispatch(Gant.groovy)
        at gant.Gant.invokeMethod(Gant.groovy)
        at gant.Gant.processTargets(Gant.groovy:495)
        at gant.Gant.processTargets(Gant.groovy:480)
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: 1
        at java.lang.String.charAt(String.java:687)
        at java.util.regex.Matcher.appendReplacement(Matcher.java:703)
        at java.util.regex.Matcher.replaceAll(Matcher.java:813)
        at java.lang.String.replaceAll(String.java:2190)
        at _Events.launchReport(_Events.groovy:138)
        at _Events$_run_closure6.doCall(_Events.groovy:108)
        at _GrailsEvents_groovy$_run_closure5.doCall(_GrailsEvents_groovy:58)
        at _GrailsEvents_groovy$_run_closure5.call(_GrailsEvents_groovy)
        at _GrailsTest_groovy$_run_closure1.doCall(_GrailsTest_groovy:214)
        at TestApp$_run_closure1.doCall(TestApp.groovy:102)
        at gant.Gant$_dispatch_closure4.doCall(Gant.groovy:324)
        ... 10 more
Error executing script TestApp: java.lang.StringIndexOutOfBoundsException: String index out of range: 1
Application context shutting down...
Application context shutdown.