Class Not Found java/lang/ClassNotFoundException on Nokia c3

I have Nokia c3 with me last four month and after updating what happen with my phone. When I am starting Opera mini browser, Ovi Browser or other application. I gets error message throw by application. Error is just like that “Class Not Found java/lang/ClassNotFoundException”  What to do tell me please  OHHH and I just tell you one thing that my version 7.2 change after updating  8.62.

how do you default C3-00 everything to memory card

My message inbox getting full after 250 sms. What happen with my nokia c3.i don’t know because I just buy 7 day ago and I don’t have much knowledge about c3. Please help me. Inbox getting full and delete this because you have no memory but I have 2 gb memory card

Unable to delete SMS from Nokia C3-00 after firmware up-gradation

Nokia C3-00 is the mobile phone that is presently utilized by me. Nokia C3-00 is a cell with a large number of service offers and I have being utilizing it for an extended time and found it quite supportive at numerous times. I never encountered any situations before I introduced most recent Nokia firmware (08.63) on my Nokia C3 utilizing Nokia Ovi suite. Following I introduced the Nokia firmware (08.63) and restored my contacts utilizing Ovi suite suddenly 6 discharge wires showed up in my inbox that cannot be erased. On endeavor to erase them I get failure inform colloquialism "Error happened. Cancellation not finished”. I am not ready to take care of this situation. What would I be able to do with a specific end goal, which is to dispose of them?