This has been introduced in 2.6.0
before that two different matrix-element/directory were created but only one was created starting with 2.6.0 (but with this issue in the process definition of the second process)
The issue is related to the function
reorder_process
which has wrong size input for the two permutation element.
Those input are given by:
amplitude_tag[-1][0].get_external_numbers()
so the issue is either in the definition of the tag and/or in the get_external_numbers routine ...
More information,
This has been introduced in 2.6.0 element/ directory were created but only one was created starting with 2.6.0 (but with this issue in the process definition of the second process)
before that two different matrix-
The issue is related to the function tag[-1] [0].get_ external_ numbers( )
reorder_process
which has wrong size input for the two permutation element.
Those input are given by:
amplitude_
so the issue is either in the definition of the tag and/or in the get_external_ numbers routine ...
Cheers,
Olivier