Microsoft Excel will not start up on my new IMac
I recently (July 2013) bought the new IMac and installed Microsoft (Word, Excel, Powerpoint, Outlook). All applications have been operating fine (the 5 days I have had the computer) until this evening. Excel is giving me an error: Microsoft Excel encountered a problem and needs to close. We are sorry for the inconvenience. It continues to ask me to send an error report. I have restarted my computer however that did not solve anything...
All other applications (Word, Powerpoint and Outlook) open properly.
Any help is greatly appreciated.
iMac (21.5-inch, Late 2012), OS X Mountain Lion (10.8.4)