@Rose_love
Yes, my RD160 is running V1.56. However, I have been using V1.56 since April, so I currently do not associate the issue with this software version.
My RS130 is connected to the RD160 via I²S.
Regarding the frequency of the issue: In my last 10 attempts to turn the system on (first the RS130, then the RD160), the RD160 failed to start 3 times.
One additional detail may be relevant: A few weeks ago, I enabled “Testing the Sample Rate When Setting Up a DAC” in the RS130 settings. I have now disabled this function again. I will monitor the situation and see whether the problem occurs again.
I will report back with the results.