Tbot1000:
...I get this error for my code:...
Hi again Tbot1000, perhaps try running your program on a Uno or other ATMega328 board, just to make sure your code works. Programs usually compile smaller on a Tiny, but remember they only have 8K of flash, and ... 512 bytes? of ram. If it compiles on a 328, but takes up 10K or more, it is unlikely you will be able to compile it on the tiny85.
Tbot1000:
What settings do I need to use for the ATtiny Core? ...
Select the 85, 8 MHz internal, and burn the bootloader prior to programming the chip the first time.