why wont L.O load my spreadsheet? is it too big? 1.9kb

I have about 10 sheets on the folder, each with about 40 lines and maybe 12-20 columns. I had no trouble until I opened a new sheet with about the same amount of info. Now it loads until the line of little blocks at the bottom is nearly complete, but then stalls and becomes unresponsive. What gives?

Size is probably not the problem as I have some spreadsheets that are larger (4 columns x 4000 rows with 3 or 4 attached charts). Is there a problem loading the older sheets or just the new one?