Nik Version 2.3 Photoshop Crashing

I have been using Nik with Ps CC 2020 and it has been working well. Since up grading to version 2.3 Photoshop has been crashing in Silver Efex and Colour Efex (I haven’t used any other modules) when I click OK to save my work and return to Photoshop.
Is anyone else experiencing this?
Any suggestions to fix it.
I am on a Mac running High Sierra (10.13.6)