Ciao.

Yes, I have DISABLE before the loopdata interrupt sub-routine.

My code run for nothing in dummy:, when receive an character from PC run the interupt and read data from EEPROM end send it to PC with HSEROUT.
I dont think can "Fall into" the interrupt handler without an interrupt.

Some times (verry rare) my code works without problem, but most of times I have this random error.
The same code with PIC16F876 works fine.

Thanks.
I wait any way other ideas.