Fails to activate on postgres

[BernhardPosselt]

Getting this after activating documents:

{"app":"core","message":"An exception occurred while executing 'COMMENT ON COLUMN "oc_documents_revisions".save_hash IS 'used to lookup revision in documents folder of member, eg '{hash}.odt''':\n\nSQLSTATE[42601]: Syntax error: 7 ERROR: syntax error at or near "{"\nLINE 1: ...ookup revision in documents folder of member, eg '{hash}.odt...\n ^","level":3,"time":"2013-09-14T20:16:54+00:00"}