Compiling from source for J2ME causes failure of the pre-verification process
The J2ME version should always be built using a JDK compatible with your J2ME WTK. Whilst the code compiles under previous versions of the API,, the pre-verificiation process that is required to build jar files for the J2ME platform will fail if the compiler is not compatible. Normally this requires at least version 1.4 of the Java Development Kit.