R help - Apr 2012 - Error in .Call("X" ... X not in DLLS for package G

Hello,

I'm calling function X as

.Call("X",a,b,PACKAGE="G")

the function X has been registered as

R_CallMethodDef callMethods [] = {
  {"X",(DL_FUNC) myfun,2},
  {NULL, NULL, 0}
};
...
R_registerRoutines(info, NULL, callMethods, NULL, NULL);

yet, I (sometimes, not all the time) get this error:

Error in .Call("X", a,b, PACKAGE = "G") :
  C symbol name "X" not in DLL for package "G"

Any idea why this might occur?

Thanks and Regards

H

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