[WD20] Can't Apply a Skin Template

I have a project where I'm using the Gensteel style as the default style. When I add controls now, they do not get the Gensteel style. If I try to click Apply a skin template on the Window ribbon I get this error:

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Error loading 190 Gensteel skin template.
Unable to find file. Check whether file name and path are correct.

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Technical Information

What happened?
Error loading 190 Gensteel skin template.
Unable to find file. Check whether file name and path are correct.

Error code: 3550022
Level: fatal error (EL_FATAL)

Dump of the error of 'WDFEN.DLL' module (20.0.245.11).
Debugging information:
### <Modele 0> <MiseEnPage 0> <m_nOption 799> ###
Additional Information:
EIT_SRCFILE : <C:\WinDev 20\Personal\Templates\WD\190 Gensteel\Gensteel_0.wdw>

Anyone ever had this problem? I recently installed WD21, but haven't used it yet. I think this may have something to do with my problem. I was able to open up my project in WD21 and apply the skin template. If I stick with WD21 can my coworkers continue to work on the same project in WD20 as long as we don't use new features? Looks like that is not possible.