it happened to me too
i keep pressing close until it close.
and double click again press enter
open CC
SG click refresh
done

I'm also having that issue where I cannot apply single hair components to a character, it kept asking if I want to convert to CC3+ and process the conversion to add the new morph sliders, so I installed the hotifx, running it as an administrator because otherwise it didn't work, but as an administrator the feedback said that 1 file was changed both in CC3 and iClone7. Then I went back to CC3 and tried it again, still not working, I saw a comment that said it worked after updating the content in the smart gallery, I couldn't find the "update" button he mentioned so I completely uninstalled the content and reinstalled it, still the same problem.

When I click on any of the hair components and click "find in smart gallery" it says the item couldn't be found. I was thinking of getting the new hair and beard packs before the sale price ends but on the one side this seems to be a very buggy addition and on the other side I cannot see any example of how these hair elements work together, your only example is using the hair parts that we already get as a demo but I don't know if combining different hair components from different hair styles would work because you never showed this on any of your promotional videos.

HUGE bug in 3.4 - it will no longer import just about any Daz avatar that isn't completely human.

IOW, all the Daz monsters, creatures and anything built on the Gen 3/8 model will cause 3.4 to crash, big time.  I suspect it's something to do with the Arkkit installation during conversion but it also means you can't take all the existing creatures (which came fine into previous versions of CC3) and make them into CC3+ avatars (they also crash CC3 in spectacular ways, some even melting my machine down).

I really want to hear from the devs about this -- putting in in Feedback Tracker just means they won't see it.

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

Mike, does it also crash when you use the CC3 option of Transformer?

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

You can't bring in the ones I want to bring in via CC3 -- that's only for Genesis and Gen 2.  These are Gen3/8 characters and they crash CC3.  Those same characters (brought in previously) cannot also be converted from CC3 to CC3+.

I can promise you this is huge -- it essentially cuts the legs out of 50% of all Daz avatars.  

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

Oops, spoke too soon.  I guess I learn something every day.  Okay so you CAN bring in even these Gen 8 characters via the CC3 import.

So for some reason it's only CC3+... but, more importantly, only on CERTAIN Gen3/8 characters.  I'm not sure what they rhyme or reason is on this, as the ones I'm trying are just morphed characters (in point of fact I can bring over those and create morphs to apply to existing CC3+ characters.  I'm going to have to play with this as a possible PITA workaround.  Which would indeed be a pain in the ass workaround as it will require a TON more work).

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

And even spoke too soon THERE.

Nope, there's NO WAY to get the characters we used to be able to import just fine into CC3 AND convert them to CC3+ characters.  Just no frickin' way.  So this means about 95% of all CC3 can NOT be converted (and, worse, crash your entire computer).

Major, major bug.

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

For those having issues adding hair, beard, and eyebrow elements, I had the same issue and fixed it by going into the Smart Gallery to the CC3 Embed Hair pack. This is under Pack > Hair > Hair Style or Pack > Hair > Hair Element. I double clicked on the pack which initiated an update. Once the update was installed, I was able to successfully use the elements both from the Content tab and the Smart Gallery. No hotfix needed.

nice, this finally worked for me, someone mentioned a different route that wasn't working for me even after installing the hotfix and reinstalling the full embed hair pack, thanks

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

I *might* buy some content from the store if the free options would just show up in the smart gallery. This doesn't feel ready for primetime. I keep trying to build a workflow with Reallusion but it's proving very frustrating.