On a clean multiserver install of ColdFusion 8, I was surprised that <cfapplication> was throwing an error.
The error I was getting was:
An error occurred in creating the presentation. java.io.FileNotFoundException: C:\JRun4\servers\SERVER_NAME\cfusion.ear\cfusion.war\WEB-INF\cfusion\lib\preso\viewer.swf
Upon investigating, it seems that the primary JRun server for ColdFusion (usually called "cfusion" had the proper files in the expected places, however each of the additional servers that were created had several directories missing from the last "/lib" folder, including the "preso" folder mentioned above, which caused the issue.
The missing directories were:
Directory stats also show that the cfusion server has 187 objects, while the new instances had only 179 objects. Take the above two directories out, and you are left with 6 other files that are apparently missing. I haven't spent the time to figure out which ones, because everything else seems to be working right now. I just find it curious...
Anyway, copying the "preso" folder from the cfusion server to your manually created server fixed the problem. If you run a clustered server, don't forget to copy to each server in your cluster.