Can you please try to use different name for the custom skin that you are using (FsWindows7 for example)
in steps 5 and 10 and see if it will make any difference. For avoiding the manual renaming of the existing skin I would suggest that you use the Visual Style Builder
and save thew new skin files.
You can also refer to the following help article for additional information for your requirement:
If any further assistance is needed, please open a regular support ticket with the custom skin archive, so we can make some tests locally.
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