Error while uploading: missing 'recipe.cpp.o.pattern' config

The Uno has a different AVR iC on it, the mega328. Have you loaded the boards.txt files for the attiny? You might want to try and use 1.0.5 IDE, as that is meant for the 8 bit chips. If you don’t have the ARM based boards, than you don’t need the 1.6 IDE.