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BlackBerry® OS Smartphones

Posts: 15
Registered: ‎11-21-2012
My Device: Q10
My Carrier: Vodafone

Viber 2.4



I have been using Viber 2.3 and older versions without any problem. I tried to download the newest Viber 2.4 via BB World, but I have problem running it. I receive the following message:


uncaught exception: java.lang.NoClassDefFoundError


Than Viber is installed, seems that everything is ok, than asks for permissions for connections etc, but I cannot move forward, it does not start.


My phone:

Bold 9700

Hungarian language


Do you have any solutions? I tried batter pull off, downloading older OS, nothing worked.



Trusted Contributor
Posts: 108
Registered: ‎12-05-2011
My Device: 9900
My Carrier: o

Re: Viber 2.4


Hi there ,

This is a member of the Viber Team. Smiley Happy


Did you try to uninstall>reinstall Viber?

Do you use WiFi or 3G?

An official representative from Viber Media (Viber app.)