Hi, Since upgrading to 10.9 Mavericks both Excel and Word (office for Mac 2011) are failing to show data in documents.  I believe this is a font problem and i had exactly the same experience when i upgraded Mac OS last time.  

I have seen a thread on this today, and followed the suggestions therein.  namely to Open the Font Book application, Select all fonts, Validate, I then removed the fonts that were labelled as not working, to no avail.  I then tried the SAFE BOOT and this succeeded and both Excel and Word were back to normal.  

However 20 minutes later, after closing and opening Excel and Word again, I am back to square one.

Any help would be greatly appreciated
Hi, Since upgrading to 10.9 Mavericks both Excel and Word (office for Mac 2011) are failing to show data in documents.  I believe this is a font problem and i had exactly the same experience when i upgraded Mac OS last time.  

I have seen a thread on this today, and followed the suggestions therein.  namely to Open the Font Book application, Select all fonts, Validate, I then removed the fonts that were labelled as not working, to no avail.  I then tried the SAFE BOOT and this succeeded and both Excel and Word were back to normal.  

However 20 minutes later, after closing and opening Excel and Word again, I am back to square one.

Any help would be greatly appreciated
The font changed to a smaller size when Hotmail changed the "look" of the entire site. But the biggest problem happened today when in the middle of an email I was composing, the font suddenly became microscopic & I can't find a way to read anything or change it.
What is going on? Things were fine before somebody " improved" the site. Hopefully it will be fixed by the time I'm notified that there's a response, otherwise I'll never be able to read that someone actually responded.