Visual InterDev
The debugger creates a Microsoft® Transaction Server (MTS) package to allow you to attach the debugger to the Web application. This error indicates that the debugger was unable to create the package. Likely causes include:
Do you want to continue launching the debugger? If you choose Yes, you can view the file in the debugger and in the browser, but will not be able to debug.
For details about server debugging options, see Debugging Server Script. For information about manually enabling debugging on the server, see the topic "Enabling ASP Debugging on the Server" in Troubleshooting.