Toolpaths will not load

Hoping someone can help. Attempting to carve a tray. completed roughing pass, came back a few days later and now it wont generate toolpaths. It sits for a minute saying “generating Tool Paths” but then an error screen pops up and says “This Page is Having a Problem”. Even if I try to run the roughing cut again. What am I doing wrong?

I might try starting over with a copy of your file.