Hello, I've encountered a problem with Parent-Daughter correction in Genie 2000 (currently using version 3.4.1), both library and sequence are set up correctly (to my best knowledge and after consulting it with manual). Are there any other parameters Genie checks that are maybe not mentioned in the manual? The correction I´m trying to implement is between Ac-228 and Tl-208, so basically between Ra-228 and Th-228. I'd be glad to hear suggestions what could be wrong. Thanks in advance