What's wrong with this tree or this population string?

[Guillermo Friis]

Hi there IMa2 users,

I'm pretty new in IMa2 (actually I started this morning) but I can't imagine what's wrong with this tree or this population string? I get the error:

"some problem in the population tree string - something wrong in formatting of population string in input file"

Input file head:

Dating DEJU_YEJU Radiation with IMa2

# For IMa2 user group

6

RDJU CHJU VOJU BAJU GUJU GTJU

(((((0,1):6,(4,5):7):8,3):9),2):10

1

CODMIT 45 5 2 11 12 10 2433 H 0.25 0.0002433

00N5612   GAATAGTGGGTACCGCTCTAAGCCTCCTCATTCGAG...

...

Thanks so much!