Not working with Arduino IDE 1.8.x

[erlanger]

The cores are not recognized with the Arduino IDE 1.8.x

Even though the board manager says they are installed. The error is the following:

Error compiling for board ATtiny25/45/85.
The current selected board needs the core 'arduino:arduino' that is not installed.

This happens AFTER adding https://raw.githubusercontent.com/damellis/attiny/ide-1.6.x-boards-manager/package_damellis_attiny_index.json to the preferences AND adding the Attiny board support in the board manager.

I presume 1.6.x works for IDE version 1.8.x , let me know if that is not the case. Thanks for your work, I really appreciate it!

[dunk8888]

There also a driver issue,may have to install the zedig driver libusbK i had to with 1.8.1 and 1.8.2

[fabianofurtado]

I've got the same error here, using Arduino IDE 1.8.2 with Arch Linux 64 bits, avr-gcc 6.3.0 and arduino-avr-core 1.6.18.

[yzubkov]

Same with Arduino IDE 1.8.3

[Ted-CAcert]

I just tried it with IDE 1.8.2 and "Arduino AVR Boards" 1.6.19 installed (on Windows), and for me it worked like a charm.

[Ted-CAcert]

Now I tried a new installation on another laptop, and there I did install the GitHub project in the sketchbook hardware folder, instead of using the board manager with https://raw.githubusercontent.com/damellis/attiny/ide-1.6.x-boards-manager/package_damellis_attiny_index.json

Now I get a similar error message:
Die aktuell ausgewählte Board benötigt den Kern 'arduino:arduino', der nicht installiert ist.

Maybe this helps?

[isaacwellish]

Same here using Arduino 1.8.9 in Mac trying program with arduino uno. Found I got my sketch to upload to attiny 45 when going back to arduino 1.6.13