ajz3d

You can set it in "Camera->Customize Navigation->ActionType: Start Pen Rotation". This can be any combination you want, even "SHIFT+mouse move".

Instancer tool has "un-instance all" button.

Here's some nice info about this type of links:
https://www.howtogeek.com/howto/16226/complete-guide-to-symbolic-links-symlinks-on-windows-or-linux/

There's a File->Export ->Export depth along Y function that I think you will find pretty handy for this kind of task. No need to go through Retopo Room.

Never mind... it was a user error. I forgot to lock vertex normals when I was bringing my geometry for PPP, so 3D-Coat altered them on import. And because of this, in Marmoset I kept loading mesh with different vertex normals and I didn't even realize it until now. So there was NO WAY normal map would look correctly.
 
Javis, thanks for trying to help.

Ahah! I found a workaround. Although it required from me to unwrap my UV-set in order to release the stacks first.
 
Here's how it works:
0. Unwrap (obviously)
1. Choose islands that are to be mirrored and move them to a different UV-set. Say UDIM 1002.
2. Pack your original UV-set so that free space is re-filled.
3. Now, go to 1002, select the island that is to be stacked over it's mirrored counterpart and copy it.
4. Go back to 1001, select mirrored island and paste the island from 1002.
Rinse and repeat points 3-4.
Et voilà. This will snap those islands to the same position, but both will still remain on their own UV tiles.

You can assign a hotkey to Rotate panorama event in Camera->Customize Navigation window.

It's a known glitch. Complex checker is horizontally (and probably also vertically) flipped in the viewport (http://3dcoat.com/mantis/view.php?id=2048).
As a workaround, open the checker2.tga file from C:\Program Files\3D-Coat-V4.5\textures (or whatever your installation directory is), flip it and save a copy to %USERPROFILE%\Documents\3D-CoatV45\textures\ under the same name.

Hi. It's not a glitch, but a selection. You can remove it with Freeze->Unfreeze All.

IIRC you need to lock the environment sphere first. If this doesn't suffice, change the environment mode to gradient or try different shaders.

The cut-off tool can be found under "Adjust" tab. Expand the tab (on the leftmost toolbar on the screenshot) and you will see it. It's a universal tool that works with voxels and surfaces.

Try clearing the "Import Tiles as UV Sets" flag. This flag is only useful for geometry that you import to retopo room and which already has UV islands already distributed between multiple UDIM tiles.
The thing is that 3D-Coat does not directly support UVs outside of the base 1001 tile, so everything gets unwrapped inside this base tile. What the Import Tiles as UV-sets flag does, is it looks for UV islands in 1001, 1002, 1003, etc., and if it finds them, it places them in appropriate UV-sets. You said that this is the first time you have unwrapped your model inside retopo room. This means that all of your UV-sets are inside 1001. So if you select the Import Tiles as UV-sets, then 3D-Coat will not find any UV islands outside of 1001 and thus will throw all of the islands into one UV-set.
Clear this flag and try again.
 
Once your objects land in the paint room, you'll find your multiple UV-sets there, as well as multiple surface materials. At this point all of the UV-sets are on separate 1001 tiles (for each material), but don't worry. Once you're done with texturing, and choose to Export Model and Textures, you'll be presented with an export window where you will be able to select the Export UV Sets as Tiles. By enabling this flag all of your UV-sets will be put into separate UDIM tiles.
There's a caveat though. Several versions ago the UDIM order was pretty much random, but it might have changed in one of the most recent versions. It is highly possible that you'll have to rename your exported files a bit, and reorder your UDIM tiles in a 3rd party program.
 
---
EDIT: Some typos.

Hi Lefix. If it's similar to this problem:
http://3d-coat.com/forum/index.php?showtopic=18337
then installing older driver might help. In my case (Intuos Pro M and Windows 7) it was version 6.3.11w3 that solved the issue.

Hey Sub-Zero, if you're importing to Sculpt Room, then try ticking the "Import w/o Voxelization" option.

I replaced the newest Intuos Pro driver with a driver from the last year (6.3.11w3).
I've been working for several hours since then and didn't experience any problems with the pressure yet. I really hope this driver has solved the problem.

You can't lock normals when importing geometry to Sculpt Room. If your object subdivides nicely, subdivide it with the Import tool before importing it. Or select a shader that respects (or maybe I should say - interpolates through) vertex normals, like Cook-Torrance, PicMat_Grey_Clay, Oren-Nayar and some others.

Peter, the geometry unwrapped with 3D-Coat version 4.5.16 without problems that you're having. What version of the program you're currently using?
 
Anyway, your problem is caused by dirty topology at the tip of the creature's arms. Manually recreate geometry in this area and the mesh should unwrap properly.


 
 
 
Retopo groups never show up in the UV room. This room is used mostly for changing UVs on models that already have textures (it rebakes the textures if UVs are changed). But in the Retopo Room you have the whole UV toolset at your disposal - just select Mark Seams or Edge Loop tools and new tools will show up.

Have you tried this?
 

It shows up only if Smart Material Preview is minimized.

They stack on each other.
Take advantage of paint layers. You can then easily ditch or hide them if you don't like the result. Also, use clip masks because with them you can mask one layer with another.
 
For example, if I were to texture the default robot with rusty metal that is covered in red paint, I'd create two paint layers: Metal and Paint. Fill the first one with e.g. metal_forged, and selected parts of the second one with paint_2. Then from Metal layer's blending menu, I'd choose Paint as Clip Mask Layer and enable Invert Clip Mask. This will make the red paint mask the rusted metal material that lies underneath.
Note: if you change any of the smart materials, you need to reapply it to the paint layer. I always clear the layer first, or use Refill Material from layer's RMB menu.

I believe I saw a similar thread last week. I can't find it, but the solution was to enter Edit->Preferences->Viewport and enable Allow material navigation via LMB/RMB dragging in viewport. Let us know if it helped.

A simpler way of duplicating a layer is to press the third icon from the left at the bottom of the VoxTree window.

Did you select ExportAO? Okay, never mind.
I'm glad you got it resolved.

To restore workspaces (room layouts), use Windows->Reset this page to default or Windows->Reset all pages to default.
 
If on the other hand you want to reset everything back to their defaults and you're on Windows, type %USERPROFILE%\Documents\3D-CoatV45 (for V4.1.x it's 3D-CoatV4) in Windows Explorer's address bar. This will get you to 3D-Coat user preferences directory. Backup the contents of this folder (just in case) and remove everything but the License.dat file (which holds your license). Start 3D-Coat - it will recreate the default user preferences.

Yes, it's not necessary in the Retopo Room because UVs are applied immediately.