Nope just tested it, it definitely works. Tried to start the program normally, got the IOException error. Started the program by clicking "open with" and everything went smoothly.
I tried to find a solution but they were all for windows and/or complicated (for me). The solution for windows was basically opening the program as an administrator.
How to solve the problem on mac:
Right click runemate.jar
Select "open with"
Select the first option (Jar Launcher)
Now...
I get this:
chmod: runemate.sh: No such file or directory
and exactly where should the runemate.sh file be put? My runemate.jar file is in the "downloaded" folder.... should the runemate.sh also be in the downloaded folder then?
EDIT: I fixed it that problem... but now I get the
No Java...
