Presentation Template Error

System

Hi. We are using Presentation templates to just preview the content. When the user clicks "Preview " in the presentation template i redirect the user to the Application server where he can preview the Content in a JSP.
As soon as the user clicks the save button on the DCT, i use Opendeploy to deploy the files associated with the DCR(associated to the DCR with Browse). When the user clicks Preview he's redirected to this App server to Preview the content.
But when the first time user clicks the Preview button, he's always getting the "HTTP 405- Resource Not allowed" Error while he's still in the zz_soemthing_blah.html. If he click Browser's Refresh button he can see the content.
This error is showing up only when the DCR is previewed first time.
I am unable to trap the error. Please Help.