Launching Sage50 now starts with an 'open file' window - why?

SOLVED

I think this is probably an easy question related to settings and preferences in Sage50, and I feel kind of silly asking, but not sure what's happened here or how to get back to my original settings.

Usually when I launch/open Sage50 I get that start-up window of radio buttons prompting me to select whether I want to open the last file used, or a sample company, or open another company, etc. (and I usually just leave it to open the last file/company used).

However, as of yesterday morning, and it happened again this morning, when I launched Sage50 I was instead brought an 'open file' window that was looking for my company's data file. Ultimately this is no problem as I can locate the company's data file without issue and just open it, but why do I no longer get the window with radio buttons giving me the option of opening the last file used?

I must of done something to reset how Sage50 starts up, but I have no idea what i did! LOL!

Thanks!

Kristine