Does this bug still smite you with the most recent versions of Sola and Valen? If you look on the main page you'll see that I've been devoting some small amount of attention to it and I think it should be gone. Let me know.
Yes, it has been smiting me even with the latest Solaufein and Valen mods. I tried reinstalling, but then it said taht it not find ValenJ.DLG, or Setup-Solaufein.TP2. I eventually had to uninstall, and then reinstall. So far, so good... And yes, the Action error is very important for the Hear-Dalis quest. You can usually solve it by just talking to the person again, but as it says that 'Realis Shae appears to be busy', you can't open up the portal, and, thus, can't complete the quest.