When I open Excel, I get several error boxes saying "Unable to read File". I
can click on OK to get to the next step. Then I get an "Open XML"box with 3
options. Then SiSsetup1.ini tries to open but its format is not recognized.
Excel finally opens with 4 filesUSER, UBOOT.dat, BOOK1 and SiSsetup1.ini.

Then I can work normally.

It happens every time.