TypeError: state.ownParams.$$equals is not a function

[Hojekunle]

app.txt

Please see the error below when switching between states. I can transit from one state to the other at first but i can not go back to the previous state. However, with sticky set to false, i can navigate between states back and forth without the states being maintained as expected. The app.js is attached. The angular versions in use is below. angular.js v1.5.8 angular-ui-router v0.3.2 Btw it is same issue with versions below angular.js v1.2.0 angular-ui-router v0.2.13

angular.js:13920 TypeError: state.ownParams.$$equals is not a function at Object.transitionTo (angular-ui-router.js:3206) at Object.$state.transitionTo (ct-ui-router-extras.js:136) at Object.$state.transitionTo (ct-ui-router-extras.js:874) at Object.$state.transitionTo (ct-ui-router-extras.js:1301) at Object.go (angular-ui-router.js:3118) at angular-ui-router.js:4192 at angular.js:19612 at completeOutstandingRequest (angular.js:5964) at angular.js:6243(anonymous function) @ angular.js:13920(anonymous function) @ angular.js:10467(anonymous function) @ angular.js:19615completeOutstandingRequest @ angular.js:5964(anonymous function) @ angular.js:6243