I tryed to install a application in Nokia 7650 but it failled (don't know why, but it did). When i try to install the same application (with different .jad and .jar files) and some other applications it shows a message saying that the application i'm installing is a duplicate of the fisrt one and in the end of the installation process it gives system error and the applications is not installed. Any ideas of what could it be? How can i solve this?

Thanks.