XF 1.5 Error when saving Style Properties

[Travis]

When trying to save style properties, I get the following error:


Any ideas on how to fix this?

 

[Paul B]

That is a typical symptom of an over zealous security mechanism on the server, such as mod security.

Contact your host and ask them to check the logs and whitelist the offending rule(s).

 

[Travis]

That is a typical symptom of an over zealous security mechanism on the server, such as mod security.

Contact your host and ask them to check the logs and whitelist the offending rule(s).

Nothing is showing up in Error logs and Its only this one menu item that it is happening on (http://ftvnation.com/forum/admin.php?styles/snap-v2-0.2/style-properties/save). What file do I need to check? or what can I do?