Thanks for answer. I can push only OK button and after TES4Edit is still available. if I apply again the same filter works. I only translate to italian with Tecra Mod Translator from the original english one. Another action taken was "Remove Identical to master recors" always from tes4edit ( after eading elderscroll wiki ) and fix the problem with Nvidia cards using WyreBash. I "solved" same conflict searching on the web ... no other. I'm afraid that something goes wrong, but i'm not able to understand which mods introduce this error. As attachment my load order from obmm, filter options page and error. thanks, pietro