Problems with MachX and ICD Programming

[finki]

Hello,

So far, I had used a Pikprog+ for programming my PIC18F6527 with the ICD (ISP) Interface and it works fine. But now i need a USB Programmer.
So now I have the MachX Programmer, but it will not a write to the PIC nor read from there.

The MachX mostly starts programming and while verifying it brings an error message. Buffer and Device not equal.
Nearly the same with reading. The Programmer starts reading the device and the Message after is "OK" but the file is just filled with a lot zeros.
Although the device is not empty (programmed with PikProg+).

That is even if I remove the ICD cable from my board.

Can someone tell me what I do wrong?

Thank you very much