Why do I get the error nullnull when I open my BlackBerry?

when I try to open blackberry app world a message says " error starting null:null" how can I fix this?

Originally Posted by CrackBerry Question

when I try to open blackberry app world a message says " error starting null:null" how can I fix this?

You must be using legacy BBOS
It's a java error, so I would say your system files may be corrupt
Maybe try to reflash the whole os?