I received an error saying "ds_illum.exe has stopped working". See images below.
There is a thread about this error in the old google groups forum(https://groups.google.com/forum/#!msg/diva-for-rhino/uz-dWI0xDx4/3K...) but I thought I would reopen the discussion here.
Restarting, rebuilding, resetting all values and deleting the entire temp project folder did not work for me. I was finally able to fix the error by changing the file name of my project. At first it was titled "OfficeGlassTest_S_6_Glass_48_Solid_.5_8.06_1.09_Viracon_VE3-2M_35VLT". I changed it to "OfficeGlassTest_S_6_Glass_48_Solid_.5_8.06_1.09_35VLT" and it worked.
I don't see anything wrong with the original title, so I assume the error was fixed when the name change created a brand new project. Restarting and rebuilding components didn't seem to make a difference so long as the project title remained the same. In the end, I really don't know why it was broken or how exactly it got fixed, but hopefully this post can help someone else who might have this error. Good luck everybody.
It is possible that ds_illum didn't like the length of your file path or the filename, but that shouldn't be the case. Glad you overcame the issue though!
I received the same error when I selected the option to reuse the Daylight Coefficients even though I had changed the nodes configuration.
I hope this may be of help for someone else.