Thank you Orlando,

The splash screen is blank, i.e. the normal email address and password sections are just not there. I am unfortunately not an IT person at all, but will get a family member to help out on the solutions you suggested, especially the last one!

I did try switching widget modes before and the tip said to open the ProTax20.exe.config file with Notepad, which I don`t have. I tried with Wordpad (probably an apple program?) - I don`t know if that causes a problem.

I will keep you posted.

Thank you again!