Artifact Downloader Task broken in Bamboo 5 beta2

I have been trying out the 5.0 beta and have been playing around with Artifact Downloader Task feature.
I have set up a job in beta1 that copies the artifacts from another plan and tests it. However the job stopped working when I upgraded to beta2 (and beta3).
Here's my setup:
Plan 1:
Has 1 job that checks out the code and builds a set of .deb packages
In the artifacts tab for the job has the artifact collection set up - '*.deb' pattern and 'Shared' checked
Plan 2:
Has Plan 1 as parent
Has 1 job with only 1 task - 'Artifact Downloader Task' that points to Plan 1 as 'Source Plan' and 'All artifacts' as 'Artifact Name' (tested it with pointing to exact artifacts in 'Artifact Name' as well)
Plan 1 succedes and gathers the artifacts just fine - I can download them from the plan page.
Plan 2 fails with the following message:
12-Jun-2013 11:21:23 Starting task 'artifact d/l' of type 'com.atlassian.bamboo.plugins.bamboo-artifact-downloader-plugin:artifactdownloadertask'
12-Jun-2013 11:21:23 Preparing to download plan result JIMPORT-DE-16 artifact: Shared artifact: [debs], pattern: [*.deb]
12-Jun-2013 11:21:23 Unable to download artifact Shared artifact: [debs], pattern: [*.deb]
12-Jun-2013 11:21:23 Task configuration:
12-Jun-2013 11:21:23 sourcePlanKey -> [JIMPORT-DE]
12-Jun-2013 11:21:23 localPath_9 -> []
12-Jun-2013 11:21:23 artifactId_9 -> [-1]
12-Jun-2013 11:21:23 Task runtime configuration:
12-Jun-2013 11:21:23 resultKey -> [JIMPORT-DE-16]
12-Jun-2013 11:21:23 securityToken -> [6f33ef270cdf6457be09468b7a9059596238971e]
12-Jun-2013 11:21:23 artifactName_0 -> [debs]
12-Jun-2013 11:21:23 artifactPattern_0 -> [*.deb]
12-Jun-2013 11:21:23 runtimeArtifactIds_9 -> [0]
12-Jun-2013 11:21:23 artifactId_0 -> [2981889]
12-Jun-2013 11:21:23 localPath_0 -> []
12-Jun-2013 11:21:23 artifactLocation_0 -> []
12-Jun-2013 11:21:23 Finished task 'artifact d/l'

This used to pass in 5.0beta1, but fails now.