Hi,
Did you keep the C script (shown in the crosstie's instructions)
running before you started the setup process?
Script doesn't work on my mac,
"mkdir ~/.cxoffice/Origin/drive_c/Origin"
"mkdir: /Users/(userNameComputer)/.cxoffice/Origin/drive_c: No such file or directory"
but i found a solution based on your script,
-install normal until failed, this is for creating bottle
-open terminal
-go to directory based crossover bottle , in my case: "/Users/(userNameComputer)/Library/Application\ Support/CrossOver/Bottles/Origin\ (Electronic\ Arts)/drive_c/Program\ Files "
-create folder "Origin (Electronic Arts)" manually inside "Program Files" bottle
-run chmod 777 Origin (Electronic Arts)
-select as destination manually when install game
1