error for extract model to review

hiii
i dont know why : i make my export for .rvm and suddenly pdms give me this mess error:
(61,622)  Maximum  number of AUTOcolours
exceeded -  Please  delete  some  before
adding more
i dont understand because  I have already launched these export and i had no problem.
someone has an idea??
Thanks

ok i found but i dont understand why this error

you need to set autocolour reset before applying new autocolour rules...