Problem uploading after going from 1.8.5 to 1.8.9

error message: avrdude: stk500_recv(): programmer is not responding

On a Nano
Widows 10
When out put to serial port, works so have right port and connections, plus was working on the port before version change

Problem started after going from 1.8.5 to 1.8.9

complies but does not upload

Worked on Nano until upgrade (why did I do that????), fails on other Nanos, so not processor

Select Tools > Processor > ATmega328P (Old Bootloader) and then try uploading again.

That did it, thanks!!!

You're welcome. I'm glad to hear it's working now. Enjoy!