ArrowChat

I keep getting 500 errors when I try to install arrowchat. It shows on the second step after selecting a database, and I can't go any further.
What should I try to fix it?

I`m having the same trouble with it. I have tried a lot of things. I have phpfox and I can`t use my chat at the moment! D= Please if you find any solution let me know how did u fix it. I will if I found one.