You asked the same question back on page 13 of this thread.
I only have the one answer, and I gave it to you then:
Ph33zy said he fixed it by "and fixed the office apps by changing path to \windows\pxl.exe and pword.exe"
So he went into the registry and change the Path values to \Windows\pxl.exe for Excel and \Windows\pword.exe for Word.
Try using the Cube Configuration Tool found in the sticky at the top of this forum. It will allow you to change the path for the buttons.