Just came here to praise Bassline303 for the solution! I experienced this problem out of nowhere on 4.25 after switching Ray Tracing on. 

You are welcome :-)

For some UE4 tips & tricks you may take a look here :

https://forum.reallusion.com/419325/Tips-Tricks-for-Unreal-Engine-4

A huge THANK YOU to everyone who replied!!!  Dear Baseline303 your solution worked on the eyelashes!  I still hope to find a way to soften the mask a bit as the eyelashes look like she's put on too much mascara now but switching from transparent to masked was the culprit.  Thank you!  I'll also try the "Conform" and Calculate Collision option that doublesixx recommended later today.
Once again THANK YOU!!!!!!!!!!!

You are using translucent blendmode :

Do this :

Wrong :




Right :



best solution :






Hair :



Tip:

For best looking hair shaders , work with rect lights.

I have forwarded this issue to the technical staff.


 

Hi Cinemyscope..

I edit my message a third time.. You still have the shadow on the eyelashes but i haven't dabbled with this in Unreal and not sure it's just a matter of setting them to a transparent rendering type to get it workiing.. the second and third image though looks like a normal-issue where two meshes fight about the same 0-space and i read now that its an imported character from DAZ3D so it may well be the hair is not correctly positioned on the head...
Select the hair and go into the "Modify" panel, select "Conform" then "Calculate collision" and CC should correct the normal problem..

None of these issues should be un-solvable though..
Cheers




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I've now also tried a CC3 character with CC3 hair.  The export and import settings were exactly as described in the link.  I'm attaching the result.  It's doing all the same things and overall the character looks lower quality than the Daz converted ones.  I'm now down to only 3 more exports in the trial version.  I'd hate to have to buy the software just to be able to continue to troubleshoot this.

Hi,
I've followed the exact instructions with a new character coming from Daz into CC3 and ffrom there to UE4.  Unfortunately I got the same result.  This time I tried the CC3 hair.  I'm assuming the hair issue could be fixed with adjusting the fit but it looks to me that what's not working right on the hair cap is the exact same thing that's causing the eyelash issue too.

Thank you!  I'll give it a try.  I followed 2 different tutorials.  One was the Reallusion video with the Paladin character (https://www.youtube.com/watch?v=hyfKQyXvTAc) and the other was a step by step description on the Reallusion website associated with the UE4 Link download .  The two procedures were different and the description asked for the deletion of a CC shader folder in Unreal which was not mentioned in the video.  After the folder was deleted though the option for HQ import disappeared and only Standard import was available in UE.  I had a copy of the file, so I reverted back.  In both instances though the eyelashes had the same issue.  I'll follow the instructions on the link you sent.  I appreciate you replying!

Hi cinemyscope, this could be due to not properly following the import guide. 

Please delete the character and try to import it again https://manual.reallusion.com/CC_and_IC_Auto_Setup_Plugin/ENU/CC_and_iC_Auto_Setup/1.0/02_for_Unreal/Importing_Character_FBX_File.htm

Make sure that you have copied the CC_Shader folder into the UE4 Content folder.

Follow the instructions from above guide. Particularly make sure to disable import of textures and the creation of materials. And ofc the other settings shown at above website. I guess you want to import the character FBX with the High Shaders option ticked. You possibly also want to merge all materials upon export in CC3, which is an option on the export panel, 2048 resolution textures should be enough for most use cases. For games are 1024 textures sufficient.