If you are experiencing Java Plugin issues when in P6 8.x web.

If any of you are using 8.x – 15.1 and experiencing Java Plug-in issues with Firefox 31-38; most noticeably loading the page and see the block plugin icon appear, you can use this workaround to allow the sites you are trying load to pass through as trusted sites (I’ve only added Oracle/PGBU sites). This will speed up performance and reduce the actions for the subsequent loads. Feel free to share.

As a workaround, you can use the Exception Site list feature to run the applications blocked by security settings. Adding the URL of the blocked application to the Exception Site list allows it to run with some warnings.

Steps to Add URLs to the Exception Site list

1. Go to the Java Control Panel (On Windows Click Start and then Configure Java)
2. Click on the Security tab
3. Click on the Edit Site List button
4. Click Add in the Exception Site List window
   
5. Click in the empty field under the Location field to enter the URL
   
   Example: http://www.example.com
   (URL should begin with http:// or https://)

More information from Oracle located here http://docs.oracle.com/javase/7/docs/technotes/guides/jweb/security/exception_site_list.html