Hi to all !!
I just bought Corona last week in FairSaaS one year license.
All is perfect good job guys !!
But i have trouble with the DR mode.
In fact when i use it the render become more and more darker.
The slaves starting render and working well on the passes. (DR corona started as administrator )
For information all the slaves have the same gamma and have access to the network files, in vray DR all working well.
Sorry for my English… 
Hi,
-Did you activate Corona on all render nodes?
-If it is possible, can you start 3ds Max on each render node and see if it is able to successfully render locally?
-Are all the render nodes able to reach the texture files? Paths are configured properly?
Maybe you will find a solution here:
https://coronarenderer.freshdesk.com/support/solutions/articles/5000501666
update:
-Are you using the same version of DrServer on all render nodes and master? (same as Corona)
-Are you using some plugin for textures or lighting?
update2:
-check “retain EXRs” in DR render settings on master pc and check the files after rendering (hold your mouse on the “retain…” checkbox to see where they will be saved)
sorry for being so undecided. 
Hi Maru !
Thanks for the quick answer !
I used the same installer to install Corona on the workstation and on the slaves.
Yes i used the license.exe in the corona file to activate it with my mail and my password on slaves, but maybe it’s not the good way.
I can’t run max on the slave to test it because i have only one max license.
No plug for textures lighting and the path for textures is ok and properly made.
Thx !
hi,
in that case try the “retain EXRs” option - it will help a lot with pinpointing the issue
OK, i will try this option tomorrow !
Thanks a lot !
I have the same issue with DR. I’ve installed the 45 day demo versión to try it out and everything works flawlessly except for DR. Everytime data is received from render nodes the image starts to get brighter and brighter.
I tried with vray converted scenes and this happens every time, tried with a very simple scene from scratch with corona and rendered fine though. I have decided to buy the box license because I think this renderer is way better than vray but I would like to solve this problem first since I don’t know if it is something I’m doing wrong or a bug inside corona
Are you using some other plugins than Corona in this scene? For example vray hdri loader or some texture generating plugin? Something related to textures/maps/lights?
In my case, no HDRI just corona sun+sky, for the textures i used multi textures, but like in a other post i updates the version to the 2.0 in all machines.
I will try this morning to update the local data file on the slave or to run max and activate Corona.
Update : When i run max on a slave Corona is fully activated.
Wait, you said that the image is getting darker, now it looks like it’s getting brighter. Is this another issue?
To me this looks like missing texture (only diffuse color is showing) or gamma problem.
Can you perform this:
-check “retain EXRs” in DR render settings on master pc and check the files after rendering (hold your mouse on the “retain…” checkbox to see where they will be saved)
Yes strange, with multi texture image become more and more darker and with simple texture more and more brighter.
I think is a missing textures issu.
But all my slave have the right and acces on my NAS, for example same texture link in max with vray and no problem.
I will try the "retains EXR’s.
Thx !
Ok. There is also this:
But I don’t understand what he did to fix this. I sent him a message.
Ok, gamma checked on all the slave, no prob is ok.
I tested DR with a white mat scene, ok too.
So the problem come from a missing texture file on the NAS. The wood one.
But, all the slave have access on it and the Asset Tracking Dialog is ok, link are ok too.
Strange…Tested the same scene on vray DR, all is ok.
I recieved an answer from user CHampi22 who had similar problem:
I used Auslogics Bootspeed → Tweak Manager tools - System security option to disable the User Accesss Control ,all security option OFF and compelte access for anonymous user in Privacy policy.
This is the only way to access textures, otherwise TCP 1977 port error in DR server, I don’t Know why.
Maybe this will help?
" Auslogics Bootspeed" ?
Strange software to resolve missing map or map link…
I’m actually testing the same scene, with the same texture link on vray DR, working well.
When i switch on Corona i got the same issu.
Strange isn’t it ?
I had the same problem as you, I travavaille on 3dsmax, the output gamma was not the same on the master computer and my second Drserveur computer.
I put my output gamma to 2.2 on each and I redid all my textures keeping 2.2 gamma and I solved the problem mainly Whith the support of Corona
if anyone one on one problem I want to help
Ryan
No, you do not have to use this software. Just go to User Account Control in Windows and move the slider all the way down. I think so…
Maybe these guides will help:
http://www.howtogeek.com/howto/windows-vista/disable-user-account-control-uac-the-easy-way-on-windows-vista/
Just keep in mind that this will probably enable anonymous users in LAN to access shared folders (not sure how it works exactly, sorry, this is black magic for me). Maybe it’s worth trying and reverting to default values if you consider it unsafe.
Yes thanks this is helpfull but like you said this kind of trick will lead to a less secure system.
Ok i tested with the Disable User Account Control down.
Same issue…
