To add on this, I have tried to install SuiteCRM from scratch and I get exactly the same error again. Any help is welcome because this is obviously a bug
Apache 2.4.10
php 5.6.4
MySQL 5.6.22
Windows 7 Ultimate SP1
Error is on line 262 of /suitecrm/cache/include/javascript/sugar_grp1_yui.js?v=Sc3_BQ6BUgt1ZkWouU4kpQ
SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data
YAHOO.lang.JSON.parse()sugar_g…ouU4kpQ (line 262)
s = “Bad data passed in; <a h…crm”>Return to Home"
reviver = undefined
method_callback()sugar_g…lait.js (line 32)
o = Object { tId=1, status=200, statusText=“OK”, more…}
YAHOO.util.Connect.handleTransactionResponse()sugar_g…ouU4kpQ (line 55)
b = Object { conn=XMLHttpRequest, tId=1, xhr=true}
j = Object { success=method_callback(), failure=method_callback()}
d = undefined
YAHOO.util.Connect.handleReadyState/this._poll[c.tId]<()sugar_g…ouU4kpQ (line 55)