Running a Mac with OS 10.9.3 and paying $15 per month for the Office product for Mac / small business. The data on the startup screens reads 2011... is there a more recent download? 2011? Maybe that's the problem.
All Office products crash on startup. The error message is simply that an error was encountered and the program needs to close. It sends a report back to Microsoft.
What to do? This is for business... not much getting done until fixed.