Stuff error

  I get stuff error while transmitting messages over TouCAN.

Following is the test setup I have used for the CAN message 
transmission Two MPC 565 boards connected by CAN cables (TouCAN A 
and TouCAN B on one board connected to TouCAN A and TouCAN B 
respectively on another board).

I have used Extended ID 0xEEEEEEEE for transmitting the Data Frame 
from the first 565 board to second one.

When I send a message from First MPC565 board to the second one I 
get a stuff error on second one.

Can a stuff error can occur due to problem in the software or does 
it occur only due to hardware problem?

Is there any restriction on the content of the Data Frame ie., I 
read in one of the CAN documents that there should not be 7 
consecutive recessive bits in CAN frame.

Please let me know.

Regards,
Indrasena