Problem while creating .zip files for secure dfu in sdk12 by using nrfutilv1.5.0

[Raj]

Hi all, Now I'm working secure bootloader in sdk12 for these I installed the nrfutilv1.5.0 by following nrfutil user guide link text

while I'm creating .zip files it giving error as shown in nrfutil user guide as shown below

After installed "visual studio 2013" also it giving same error. And I'm using windows 8.1 64 bit OS.

The error message when I'm creating zip file is

Can any one help me to create dfu .zips files successfully for sdk12

Thanks in advance

[Raj]

Hi Spockeli, also I tried python script directly it giving same error. Just I entered command as "nrfutil --help" or "python nordicsemi/main.py --help" it giving same error as shown in above screen shot. And I tried in 4 systems one is windows 7 and three are windows 8.1 but all are giving the same result