Webdynpros coming up Blank

I'm having an issue with all of our Webdynpro applications in Solution Manager. Our maintenance optimizer, Self-diagnosis and DVM transactions have all stopped working for some reason. Each of these transaction were working a few weeks ago just fine but they just all of a sudden just stopped. All the applications keep coming up with a blank screen with a java script error saying: 'wdaOnMainLoad' is undefined and Expected ';' wda_IS_main.js. There are no errors in ST22 or any other indication that there is an issue. I've searched high and low but cannot find a solution on this.