Thank you for the answer, i will do that way from now on, apologize for that, i'm new here.
I have already read the readme about ini. files, i had issues with ini like this before, usually starting the launcher to update registry log with game directory solved the issue, but not in this case, i've checked registry and game path is correct
I'm not home atm so i cannot copy/paste specifically command line in arguments but as i've checked yesterday it was:
-sse -D: D:\Skyrim Ultimate Project\Stock game\Data
This is extremaly odd, because day before Dyndolod was working perfectly fine, i was able to generate lod without issues, yesterday i have changed few texture mods, so i need to regenerate lod, TexGen working without issues with the same command line arguments.