Hello, I am following the tutorials with CC3 3.2.... I am not finding the white box in Accessory > Others. I have been trying a few things to no avail.
I *can* find it under Stage Elements > Props > Substance, but it won't show up on the right side of the screen as an element under Appearance. I am unable to duplicate the tutorial because of this.
Does anybody have any advice as to how I may move ahead with the above issue?
Thank you!

Could you provide a link and where in the video it occurs?

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76% of original size (was 661x19) - Click to enlarge

https://youtu.be/1wz1jSaQo8g
0:24
Thanks for taking a look.

Also, in my search, I just found that my CC3 won't install the free Props Package. I see the box used for the tutorial in the package picture. 

That was a tutorial for CC 2.0. Thing are changing rapidly around here.
I never used them. But nonetheless, I wonder why RL converted those boxes from .ccAcc to .iProp in CC 3
And why folder name is substance if one cannot apply the substance to those props?

I am not sure if sharing those accessory boxed would violate anything. Otherwise, I can share and post a link here for those who wish to play with substance for them.

Thanks for the info. Sure, if you don't think you'd have any problems with RL. If it would allow me to be able to replicate the tutorial, I'd be happy to download it.

Also, do you have any ideas as to why I can't install the Props package? I can see it there in CC3 Smart Gallary under Free Resource. I click it and it hiccups and nothing.

Here they are. Copy them into the respective folder manually.
https://www.dropbox.com/s/fuaxfliop32zafm/Box_Acc.zip?dl=0
You would probably be able to follow tutorial. The only difference is, that the GUI has changed.
The tree structure is on the left and settings/configurations are opening on the right.

About props I am not sure. I do not have Smart Gallery installed.
But I suspect you might not have installed CC Resource pack. There are 2 of them.
You could find them at your Registration page. Click Download next to CC3 and download packs from within popup window.

Thank you! I was able to bring them up in CC3. I still can't get them to show up on the right side in the Morphs or Appearance Editors. I was able to do that with a piece of clothing by clicking the "Convert to Accessory" button, but it won't show up with these files. Still banging my head against this off and on for a couple days.

I do thank you for your help tho.

4u2ges I woke up this morning, started my laptop, read your last post, (thanks!), and proceeded to show you nothing on the right. Well, I don't know, maybe shutting down overnight, but I have it showing up on the right now! Thank you for your help, I'm sure it was the .ccAcc(s) that you posted, simply because that is what made it work. Why it didn't show last night is a mystery. Problem solved, and thanks again!