Messages has replaced all my text with a load of letter A's in boxes. What is that all about. When I type a new one it is fine until I hit enter then the same thing applies. Has anyone a fix for this?

Messages has replaced all my text with a load of letter A's in boxes. What is that all about. When I type a new one it is fine until I hit enter then the same thing applies. Has anyone a fix for this?
Picture below, many thanks for your help.
Jason

Back up all data before proceeding.
Launch the Font Book application and validate all fonts. You must select the fonts in order to validate them. See the built-in help and this support article for instructions. If Font Book finds any issues, resolve them.
Start up in safe mode to rebuild the font caches. Restart as usual and test.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t start in safe mode. In that case, ask for instructions.
If you still have problems, then from the Font Book menu bar, select
          File ▹ Restore Standard Fonts...
You'll be prompted to confirm, and then to enter your administrator login password.
Also note that if you deactivate or remove any built-in fonts, for instance by using a third-party font manager, the system may become unstable.

Similar Messages

Maybe you are looking for

  • Role about control "edit "and "diaplay" in Business partner

    HI,My Experts:   I work in SRM 7.0 ,SP03 Extended Classic Scenario.        In my system , the user can only display the "Business partner" .I give the user the role --"SAP_EC_BBP_ST_PURCHASER".But the user can edit  the BP data now. So ,I want to cha

  • Paypal integration with Oracle 11g??

    I am trying to run the PayPal integration sample application under 11g and running into an issue when it tries to access the sandbox url: p_api_url is being passed into the module setting things up and is: https://api-3t.sandbox.paypal.com/nvp l_http

  • Horizontal Menu Bar Drop Downs Not Displaying

    I've had this problem before and here I am grappling with it again.  I have a Spry horizontal menu bar with a few drop down menus on it.  The drop downs are not displaying above the other layers on the page.  http://bakerlake50k.com/draft/index.php N

  • What is the best internet security for mac

    what is the best internet security for mac

  • Open pdf file in IE

    Hi All, I want to open a pdf file in browser.I am using navigateToURL(URLrequest) to accomplish that. pdf is always opening in firefox becoz it is my default browser but i want open it only in IE. Instead of changing the default browser to IE is ther