Apps Problem with HelloWorldApplication

[MISTERCZECH]

Hey Guys

I've got a big problem with Eclipse. I started a little bit before with android development. I installed eclipse, jdk and android sdk.

Now I have problems to test my Hello World application on the emulator.
It says "Could not find HelloWorld.apk!".

After I try to make a "clean", it appears this error:

Has anybody an idea?

Thanks for help!

 

[MISTERCZECH]

Has anybody an idea?

 

[dbairduk]

x509 would point to some kind signing problem are you trying to sign the application?
look here it mat give you more info
Signing Your Applications | Android Developers