Hello. I downloaded 19.00 and installed. Restarted Windows. Opened Excel and registered. Restarted again. Same result - crash if I try to open a file directly. If I open Excel, I can open a new blank document, but I cannot open an existing file without crashing.
I am having the same issue. I had no problems with 18 but since I installed 19 I have to disable it to use Excel (16/365 64bit version). Opening an existing file (not just one - every one I've tried) will either freeze Excel on the splashscreen or the splashscreen will show "Opening: KutoolsforExcel.xlam (100%)" but will stay that way for as long as 5 minutes before opening.
If I am able to get into Excel it will freeze pretty quickly - especially when using cut&paste. When Kutools in disabled I don't have any problems.
When I first had problems after upgrading to Kutools 19 I uninstalled both Office and Kutools, deleted all folders and did a clean install. I still have the same problems.