When using the web client on VC6, it is hitting the following issue: Unable to load resource module from /vsphere-client/complience-ui/locales/Compliance-ui-resources-de_DE.swf
Are you using the vCenter Support Assistant? If so, here's your issue and fix:
No, it is happening with the standard web client.
yes, but if you have the Support Assistant deploying in your environment there are extensions that it places within the Web Client. So, just to confirm, you've never had Support Assistant deployed in this environment, correct?