pptx files merger Not working

[123keshav]

Hi,

When I try to execute the command - "PowerpointJoin.pl --conf config.txt --output merged.pptx" in windows 7.0, i get following message in the condole :
The config file should have the following format:

file=filename1.ppt
slides=1-4,6-8

file=filename2.ppt

file=filename3.ppt
slides=3

The start and end lines are optional. start defaults to 1 and end
defaults to the last slide in the file. The blank line betwen
sections is option, but makes it readable if you have a lot of
start/end lines.

copied below is the content of my config.txt file -

file=C:\PowerpointJoin-master\ppt1.pptx

file=C:\PowerpointJoin-master\ppt2.pptx

file=C:\PowerpointJoin-master\start.pptx

Let me know how to resolve this issue.
Best Regards, Keshav