Dear Experts - or probably even beginners? . . . I am a complete newbie and am completely boggled! I have tried a million things but can't seem to crack this (probably) super simple problem.

I want to array a square along an arc (or a circle) - I have managed to get this far quite easily - but the square needs to rotate around its own axis by 90degrees (see scrnshot). I cant figure out how to create the "step and rotate" function. I only manage to rotate all the squares the same angle but progressively one after the other . . .

I will probably have over 50 rotation planes at the end but have started off simply as you can see in the jpg.

Thanks in advance - any help would be very much appreciated!!! :)

 J.