[mesa-users] running ./rn gives error

[Nikolai]

Dear all,

I executed ./rn and got the following error message

  All this and more are saved in 'LOGS/star.log' during the run.
  create pre-main-sequence model
                                    xa(i)           4   
-1.0074785033543474D-18
  failed in build_pre_ms_model
  star_create_pre_ms_model ierr          -1

  do_load1_star ierr          -1


This is my first run after the sample mentioned as an appetizer which 
worked without an error.

Any help is much appreciated.

Sincerely,
Nikolai