Chrome / Google Analytics - ga.js:1 Uncaught SyntaxError: Unexpected token ILLEGAL
Use ctrl + shift + n to open a tab in safe mode, then load your URL there to verify whether an extension is causing the issue. If the error disappears, this is the root cause. Otherwise, use a data URI to check whether it's a corrupted font issue:
data:text/html,Helvetica<br><font face="Helvetica" size="25">abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ</font><br>Helvetica Neue<br><font face="Helvetica Neue" size="25">abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ</font>Replace Helvetica Neue with the font-face used by the web page.
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