[Koha] Koha error at Printer Profile

Hi community, I am using Koha 3.14.04 under Ubuntu 12.04. There is an error while I try edit Printer profle. Home › Tools › Patron card creator › Printer profiles › Edit Printer Profile After click save button, screen shows fellowing message: --> Software error: Can't call method "save" without a package or object reference at /usr/share/koha/intranet/cgi-bin/patroncards/edit-profile.pl line 72. For help, please send mail to the webmaster ([no address given]), giving this error message and the time and date of the error. <-- Can someone give me a hand. -- Wishing you all the best. . . . Anthony Mao 毛慶禎 ＋886 2 29052334 (voice) + 886 2 29017405 (FAX)