my page hangs when i run tour for second time

[swethanaidu]

Hi... This was the error found in console


Uncaught TypeError: Cannot read property 'zIndex' of undefined ------- jquery.joyride-2.1.js:702
methods.un_expose ------- jquery.joyride-2.1.js:373
methods.hide ------- jquery.joyride-2.1.js:124
(anonymous function) ------- jquery.min.js:2 v.
event.dispatch ------- jquery.min.js:2 v.
event.add.o.handle.u

Please help!!