Same problem: TTX 2018 Deluxe running on Windows 10. It crashes without warning or any error message at different points. Crashed several times just entering basic info to start a new return. Farthest I've gotten is mid-way through entering income items. Sometimes it saves data sometimes it doesn't. I'm getting tired of re-entering the same info over and over. Someone at Intuit needs to start looking at this and tell us what's going on. It would be nice to know they are aware and are trying to fix this.