Try this:
- Open AllenBradleySLCMicro.vb
- Go to line 1780
- Change to this:
ProtectedTypeLogicalRead(Convert.ToByte(NumberOfBytesToRead), Convert.ToByte(PAddress.FileNumber), Convert.ToByte(PAddress.FileType), _
Convert.ToByte(PAddress.Element), Convert.ToByte(0), TNS)