JNI FindClass coredumps with JRE 1.5

I have a sample program, please see below.
This program exe runs fine with JRE 1.4 on AIX 5.2.
But same exe causes core dump with JRE 1.5 on AIX5.2.

Any idea why this should happen?
(I did set all environment variables required - LDR_CNTRL,
AIXTHREAD_SCOPE etc)
Do I need to compile my sample program with JDK 1.5??


Please let me know if anyone has came across such issues with JRE 1.5.


Thanks in advance.
-Abhijit


Sample Program:
============
int main(){


JavaVM *jvm; /* denotes a Java VM */
JNIEnv *env; /* pointer to native method interface */


JavaVMInitArgs vm_args;
JavaVMOption options[5];
char* classpathVar = (char*)"-Djava.class.path=.";
options[0].optionString =
(char*)"-Djava.compiler=NONE";// disable JIT
options[1].optionString = classpathVar;// user classes


options[2].optionString =
(char*) "-Djava.library.path=.";// set native library path
options[3].optionString =
(char*)"-verbose:jni";// print JNI-related messages
options[4].optionString =
(char*)"-Xcheck:jni";// print JNI-related messages


vm_args.version = JNI_VERSION_1_4;
vm_args.options = options;
vm_args.nOptions = 5;
vm_args.ignoreUnrecognized = JNI_FALSE;


/* load and initialize a Java VM, return a JNI interface
* pointer in env */
jint retValue = 0;
retValue = JNI_CreateJavaVM(&jvm, (void **)&env, &vm_args);
cout << "Return value : " << retValue << endl;
/* invoke the Main.test method using the JNI */
jclass cls = env->FindClass("java/lang/string");
//jmethodID mid = env->GetStaticMethodID(cls, "test", "(I)V");
//env->CallStaticVoidMethod(cls, mid, 100);
cout << "Done "<< endl;


/* We are done. */
jvm->DestroyJavaVM();
return 0;

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