in ROMEEventLoop::ReadEvent(), if  gROME->isOffline() and gROME->isMidas(),
ROME checks if bank size is greater than 0.

But It can happen that the bank size is 0 in normal file.
(Actually in my midas file bank size of "environment data" is 0 at this moment)

---------------------------------------------
 else if (gROME->isOffline()&&gROME->isMidas()) {
      // read event header
      EVENT_HEADER *pevent = (EVENT_HEADER*)gROME->GetMidasEvent();
      bool readError = false;
               .
               .
               .
         if (pevent->data_size <= 0) readError = true;
         else {
            n = read(fMidasFileHandle, pevent+1, pevent->data_size);
            if (n != (int) pevent->data_size) readError = true;
	    if ((int) ((BANK_HEADER*)(pevent+1))->data_size < 0) readError = true;    <-- I changed here
         }
      }
      // check input
      if (readError) {
         if (n > 0) cout << "Unexpected end of file\n";
         this->SetEndOfRun();
         return true;