BUG: (6.0b Beta 1) Reproducible error while building PBB

I have a reproducible error while building my PBB. The error happens while re-building a PBB or while building a new one.

These are the logs:

8713.Logos.log

1460.PBB_733f2f61d60c4cc5afb33703bedcb7c4_2014-12-05T07_17_30Z.log

Let me know if I can provide any other details. Thanks.

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