Every page I browse with Chrome shows this error in the console:

extensions::uncaught\_exception\_handler:8

> 
> Error in event handler for (unknown): SyntaxError: Failed to execute 'insertRule' on 'CSSStyleSheet': Failed to parse the rule '::content #GoogleLeaderBoardAdUnit, ::content .insert\_advertisement, ::content .ads-fif, ::content a[href^="http://www.gamebookers.com/cgi-bin/intro.cgi?], ::content .ads324-wrapper, ::content #rhsadvert, ::content .ad-lead, ::content #gtv\_tabSponsor, ::content #adsense1, ::content #ap\_adframe, ::content #adv\_google\_300, ::content #iqd\_rightAd, ::content #bottom-side-ad, ::content #right\_side\_bar\_ami\_ad, ::content .ipm-sidebar-ad-middle, ::content .topad-area, ::content #advertising\_728, ::content .logo\_AdChoices, ::content #right-uppder-adverts-container, ::content .article\_ad { display: none !important; }'.
>  at chrome-extension://cfhdojbkjhnklbpkdaibdccddilifddb/include.preload.js:345:25handler @ extensions::uncaught\_exception\_handler:8exports.handle @ extensions::uncaught\_exception\_handler:100EventImpl.dispatch\_ @ extensions::event\_bindings:384EventImpl.dispatch @ extensions::event\_bindings:401propertyNames.forEach.target.(anonymous function) @ extensions::SafeBuiltins:19$Array.forEach.publicClass.(anonymous function) @ extensions::utils:94dispatchOnMessage @ extensions::messaging:316
> 
> 
> 

If I deactivate Adblock Plus (1.9.3) the error message is gone. If I activate Adblock Plus the error shows up again, even if every other extension is deactivated. I am worried Adblock is not the problem, but makes the problem visible.

Also a project I just finished got declined by Google Adwords with the reason "Malware". Im waiting for a callback from Adwords tech support for more details.

I am worried that my system or browser is infected with some sort of malware which already found its way into my web projects. I have no idea what to do about it.

I am running the latest Chrome on Yosemite 10.10.5

Any suggestions?