Hello, In order to deploy a BlackBerry application I need to publish some .cod, .jad and .jar files, and set specific MIME Types so the phone will "understand" that the application needs to be installed. Mime types are: .cod files: application/vnd.rim.cod .jad files: text/vnd.sun.j2me.app-descriptor .jar files (optional): application/java-archive I created a "BlackBerry" directory and upload the .cod, .jar and .jad files. Then in Control Panel I configured the mime type for .jad files. Since .cod files already have a default Mime Type at server level, it cannot be added as a Custom one, and it must be defined at application level. So I added it to my .Net application Web.config file, like this: Code: <configuration> ... <system.webServer> ... <staticContent> <mimeMap fileExtension=".cod" mimeType="application/vnd.rim.cod" /> <mimeMap fileExtension=".jad" mimeType="text/vnd.sun.j2me.app-descriptor" /> <mimeMap fileExtension=".jar" mimeType="application/java-archive" /> </staticContent> </system.webServer> ... </configuration> But, when I try to download the .jad file (http://mywebsite.web123.discountasp.net/BlackBerry/file.jad), I get a 500 error, with only the text: "The page cannot be displayed because an internal server error has occurred." Is there anything wrong with this configuration? Am I missing something? Thanks in advance Regards