Downloaded play-2.0 from type safe yesterday, following instructions as far as I can, but when I come to build with sbt I get unresolved dependency errors:
so there is a problem with .ivy2 repository
as for commons-codec-1.4
there are ivy-1.4.xml and ivydata-1.4.properties files
in ${ivy_home}/cache/commons-codec/commons-codec dir
but NO real commons-codec-1.4.jar in /jars subdir
DELETE these .xml and .properties files and compile your project with sbt once again
dependency should fetch now
the same is for slf4j-api-1.6.1.jar