I have deployed struts 2.0.11.1 on Websphere V6.1.0.13 using RAD 7.5 (show-case apps, blank.war) everything works fine. So I assume you should not have any problem deploying 2.0.11 on RAD 7 or RSA 7 as long as your server runtime environment has fixpack 7 or more. You also need to set the following custome property for your server through admin console, Go to :"Application servers >=server1 > Web container > Custom Properties" and then create the following custome property with its value set to true[com.ibm.ws.webcontainer.invokefilterscompatibility]. However; if you have all the above setup and you use struts 2.1.1 or 2.1.2 [with form based security enabled] then if you enter any url that ends with ".action" in a newly opened browser, it would fail and you get "page not found error" , I have already opened this as bug
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