Try to change date from 2009-08 10 to 2009-08-10 (with a dash).
Here is a "more minimal" example, where I removed other tags using fb2k. Gives same error (only 1.3.15 tested).
I've tested with making the same change locally on 10+ files i have and it works just fine with v1.3.15 but not with not with your sample files. Don't have a clue what's going on with your files........