What is a runtime error and how do i fix it

[Joan46]

I keep getting a runtime error and I have to get out of my Yahoo e-mail and go in again. It happens multiple times a day. What do I do to get rid of it?

 

[Dark Lord of Tech]

UPDATE JAVA!

 

[Joan46]

How would I do that?

Thank you for replying so fast.

Joan

 

[Dark Lord of Tech]

http://www.java.com/en/