Q:

Excel error : "Not enough memory"

A friend of mine just bought an MBA. He installed Office 2011 in order to work mainly with Excel. As he opened one of his file (6.5MB - multiple sheets - company logo - no graphs) and wanted to save it this box appears:  
where you can read something like Not enough memory. If I click on OK the box appears again like 15 times.
Thinking of an installation issue, I tried on my MBP which did the same result. But his old computer (win7 - Excel 2013) can open and save the file without any issue.
During my google searches, the only result that I found led me to a Windows based solution or an help site from 1994...

A:

The file was saved as Excel 95 and was to big for the destination file. A simple save As with the new format xlsx solve the issue.

