Path motor problem

hi

i have a problem with the attached assembly...

it is a conveyor, and i want to move it along the path...... i added a path motor but it always interupted and never complete the motion

i added multi path motor but no result

there are 57 holders,, i suppress 54 and added one path motor..... it worked

again i unsuppress all the 57 holders and added one path motor for each 3 holders but the same error always appear

it always asks for initial velocities or it says "the simulation can not continue"

it always asks to change the motion manager properties

what is the problem please?

thank you and forgive my language "i'm not fluent"

SolidworksMotion Studies