The preparation of a Collection Key can fail if the boot image file cannot be created.
Make sure you have full read/write permission to access the folder C:\ProgramData\ADF Solutions Inc\v4\WinPE\build.
Also, if there is a file in the directory called boot_image.vhd the previous image did not successfully finish leaving this file in a corrupted state. Delete the file, reboot the computer, and the Collection Key should prepare properly.