Hi grahamhughes ,
First of all thanks for help me.
Today I changed the version of manifest file by 1.0.0 but doesn't works.I explain you the steps that I do:
1.I transferred the .jar file to my nokia 6300 via bluetooth.
2.Then, I open the .jar file and my phone ask me "Do you want to install?"
3.I select Yes.
4.I have to choose where I want to intall it: Telephone memory or memory stick.
5.I try in both places (Telephone memory and memory stick)
6.Begin to install but don't finish because appear an alert that said aplication error.
I try with others nokias and always appear the same missage.
Thank you very much!!!!!!