[Koha] Koha 17.05

We have installed Koha 17.05. Once installation is done, we could see lists like Centreville Fairfield Fairview Franklin Midway etc. Is that okay. Later on I am setting parameters in Global System Preferences, but it not accepting any changes. It says Error; your data might not have been saved It logs out. What might be the problem? Regards, *______________________________* Mrs. Ambika C.A. Librarian K.S. School of Engineering & Management #15, Mallasandra, Off. Kanakapura Road, BENGALURU - 560062 Ph: (080) 28425012 Extn: 200 Mob : 9036486519 <http://www.rediffmail.com/cgi-bin/red.cgi?red=http%3A%2F%2Flibrary%2Epes%2Eedu%2F&isImage=0&BlockImage=0&rediffng=0>