USBtinyISP programming error

Hello guys,
I have a mind-blowing problem:
Situation:
Trying to upload the classic blink sketch to ATtiny84A chip with my USBtinyISP programmer in Arduino IDE.
Settings:

  • Board: ATtiny84
  • Processor version: ATtiny84A (according to my chip)
  • Programmer: DIY ATTiny: USBtinyISP
  • Proc. Speed: 8MHz internal.

Ctrl+Shift+U --> rc=-1 error

I checked the wiring many times.

And here comes something interesting:

  • I can program the chip via an Arduino NANO board
  • I can program an ATtiny13 chip via USBtinyISP

Where is the problem with the combination I need?

Thanks for any help!

Without seeing the complete verbose error message, I haven't a clue.