Hi,
I am at the tms days today and tomorrow, I will look at this as soon as I come back next week. But in the meantime, can you confirm if the file "KarDlk.NT1.xlsx" is the correct one?
I tried here in C++ builder 12.0, win32 and win64 platforms, and it worked fine.
Are you using win64, win32 or win64x? Any other idea of what could be going wrong? Where does the debugger stop? If you just open the file and save it, it also crashes?