SharePoint SSRS Manage Menus

Issue:
After uploading a Reporting Services Report to a SharePoint site, clicking on the drop down next to the report to bring up Manage Data Sources, Manage Subscriptions, Manage Paramters and Manage Process Options returned the following error:
The resource object with classname of “ReportServer” and key of “DataSourceList” was not found. DataSourceList was replaced with either SubscriptionList, ParameterList or ProcessingList dependent on which menu was selected.

The environment is setup with Two Front End Web Servers and One Central Application SharePoint server.

Answer:
It turns out that it had to do with the Web Front End servers not configured the same as the Central SharePoint server and this is what was causing the error.

The following are the steps that were done to get the menus the work as intended:
It turns out the ReportServer.resx was missing on the two front ends. In IIS on the Web Front Ends, navigate to WebsitesDefault Web SiteApp_GlobalResources and paste a copy of ReportServer.resx which was found in the InetPub folder tree.

The ReportServer.resx is the resource object XML file that has sections for DataSourceList, ParameterList, SubscriptionList, etc., which would explain the error we saw if the file was missing.

In the event that you run into this in the future, checking the Web Front End servers as well as the Central Admin server and ensuring that the files are in synch is a good troubleshooting tactic to solve any strange behavior.