Hi Rashida!
My host, GoDaddy, cannot, or more accurately, will not disable mod_security (on a shared hosting platform). I have to admit that few of your other users appear others are having this issue, but at the same time, if GoDaddy's mod_security rules were the problem, you'd have a LOT of complaints.
My understanding is that USUALLY if there's a mod_security block, it gets reported specifically as such back to the browser. Here, when attempting to call these blocks, the Javascript console reports both a syntax error, (an unxpected period), and a line of code, which I presume is generated by SPP, which cannot be parsed.
Only your coders would know for sure, but I'm guessing as well that a similar type call is made when the SPP user clicks on "layouts", "addons", etc., and those calls work perfectly.
Warmest regards, Andrew