A: 

If the configuration is annotated and in a different base package than "package", the context will not pick it up. You need to tell the app context to scan the other packages as well.

EDIT Sorry missed the guts of the exception. Did you sign the jars differently? They need to be signed with the same cert.

SB
All config files are at "package" and subpackages.
Ramil
jars of my project are made by maven. I didn't specify anything about the signing it. Spring is from maven repository too.
Ramil
It definitely is a problem with the jars being signed. Maven might be pulling them in. Check http://www.myeclipseide.com/PNphpBB2-viewtopic-t-18118.html - to verify you could try using jarsigner to see what's signed and not
SB
My jar files are haven't signature. In really, the first module is testing, so, there no jar file there.
Ramil