Looking on the internet deeply has found these results:

either the director or the actor are at the fault is the most popular phrase on the web.

either the direct or the actor are at the fault 14,820,000 results on the web	either the director or the actor are at the fault 111,200,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
The actors are calling for an emergency meeting. Director, the actors are ready. The reflectance of flat mirror samples can be measured on instruments employing either the direct or the indirect calibration method. The actors are come hither, my lord. The actors are 10 years older. The actors are paid to be valiant. The reflectance of flat mirror samples can be measured on instruments employing either the direct or the indirect calibration method. The actors are looking for a maid.	Director. The actors are all set. The actors are calling for an emergency meeting. The actors are 10 years older. J Director, the actors are ready. The actors are looking for a maid. The actors are paid to be valiant. The actors are come hither, my lord.

either the direct or the actor are at the fault

14,820,000 results on the web

either the director or the actor are at the fault

111,200,000 results on the web

More popular!

The actors are calling for an emergency meeting.
Director, the actors are ready.
The reflectance of flat mirror samples can be measured on instruments employing either the direct or the indirect calibration method.
The actors are come hither, my lord.
The actors are 10 years older.
The actors are paid to be valiant.
The reflectance of flat mirror samples can be measured on instruments employing either the direct or the indirect calibration method.
The actors are looking for a maid.