Thanks for getting back to me. I have done as you suggested. Incidentally, I have the preferences set to move the trinamic motor 1 degree at a time, but in fact it moves 4 degrees with each step. I don't know whether this helps with diagnosis!

I tried what you suggested and it has improved performance but I still get the same errors albeit not as often. I have sent a bug report after the most recent failure.

Thanks for getting back to me.
I think mine must be the older model - there is no USB connection at the motor end of the lead.

I just tried the setup again with slightly different results.

Firstly, I tried with the R5. It took the required number of shots with no problem (first time this has ...

I have been attempting focus bracketing using Helicon Remote with either a Canon EOS R5 or R10 plus Canon MP-E 65mm with Canon EF-RF converter and Trinamic stepper motor (as described on the Helicon web pages).
When I set the program running, one of two situations occurs. Sometimes, although the ...

I have exactly the same problem!