After updating to Ionic Beta2-36 we are seeing above error. Tried Angular RC4 and RC5.
Hi. I had exactly the same error.
I had a separate app.html page (instead of an in-line template in app.js) with the code
<ion-menu id="leftMenu" [content]="content">
<ion-toolbar>
<ion-title>Pages</ion-title>
</ion-toolbar>
<ion-content>
<ion-list>
<button ion-item *ngFor="let p of pages" (click)="openPage(p)">
{{p.title}}
</button>
</ion-list>
</ion-content>
</ion-menu>
<ion-nav id="nav" [root]="rootPage" #content swipe-back-enabled="false"></ion-nav>
I forgot why the toolbar was there in the first place. Simply deleting it, including its title solved the problem…
<ion-menu id="leftMenu" [content]="content">
<ion-content>
<ion-list>
<button ion-item *ngFor="let p of pages" (click)="openPage(p)">
{{p.title}}
</button>
</ion-list>
</ion-content>
</ion-menu>
<ion-nav id="nav" [root]="rootPage" #content swipe-back-enabled="false"></ion-nav>