Error executing the gwt setup command from a roo script

I invoke the following batch file from a command prompt inside an empty folder

"C:\workspace\springsource-2.6.0-32 bit\spring-roo-1.1.2.RELEASE\bin\roo.bat"

Then I use the script command to run the following script:

project --topLevelPackage com.finnumber --projectName finnumber --java 6
persistence setup --database GOOGLE_APP_ENGINE --provider DATANUCLEUS
entity --class ~.domain.Document --testAutomatically
field string --fieldName iden
gwt setup

When the gwt setup command runs, it performs a bunch of file creations but it then decides to rollback (undo) some operations and then ends with the following error:

Undo failed SRC_MAIN_JAVA\com\finnumber\ApplicationScaffold.gwt.xml
google-web-toolkit.googlecode.com
Script execution aborted

If I run the script (minus the project command) from within the roo shell in STS, it seems to work.

This works in STS 2.5.1 and I believe in 2.5.2 also.