I did update it. I even uninstalled and re-installed it, and I still keep getting the same error message. I think my laptop just doesn't like .jar files, because my other shimejis are .exe and work perfectly.
I have the exact same problem as catqueen5 but when I right clicked on the jar file it did not have that option and when I right clicked on any of the other files they also didn't have that option. I've also been having the same problems with my summoner shimeji but all the shimejis using .exe work. What do I do?
For some reason shimeji's don't work for me D: I have Java but everytime I try and open it the computor asks me what program I want to open it with and if I click on java. It just says download java, but when I click on it all it does is close. Any idea how to fix it?