Thank you for the assistance.
I installed the beta (2.1.0.253), but the issue still exists. I get the below log along with an empty Output folder.
2:24:29 PM - Saving...
2:24:29 PM - Preparing...
2:24:29 PM - Adding video asset for "Main Menu"
2:24:34 PM - (notice) Popup Menu not specified in movie "Performance"
2:24:34 PM - Adding video asset for "Performance"
2:24:39 PM - Adding audio asset #1 for "Performance"
2:24:44 PM - (notice) Popup Menu not specified in movie "Journey to Arangetram"
2:24:44 PM - Adding video asset for "Journey to Arangetram"
2:24:49 PM - Adding audio asset #1 for "Journey to Arangetram"
2:24:53 PM - (notice) Popup Menu not specified in movie "Meet the Band"
2:24:53 PM - Adding video asset for "Meet the Band"
2:24:58 PM - Adding audio asset #1 for "Meet the Band"
2:25:03 PM - (notice) Popup Menu not specified in movie "Photo Session"
2:25:03 PM - Adding video asset for "Photo Session"
2:25:08 PM - Adding audio asset #1 for "Photo Session"
2:25:12 PM - (notice) Popup Menu not specified in movie "Guests Dinner"
2:25:12 PM - Adding video asset for "Guests Dinner"
2:25:18 PM - Adding audio asset #1 for "Guests Dinner"
2:25:23 PM - Step 1/4 ...
2:25:24 PM - Step 1/4: done
2:25:24 PM - Step 2/4 ...
2:25:24 PM - Step 2/4: done
2:25:24 PM - Step 3/4 ...
2:25:25 PM - Step 3/4: done
2:25:25 PM - Step 4/4 ...
2:25:25 PM - Step 4/4: done
2:25:25 PM - starting mux process...
2:25:30 PM - finished mux process
2:25:30 PM - Terminated!
As a note of possible interest, after installing the beta version, it tried to install a copy of .NET Framework, but that installation failed. The error message said the process needs to be elevated. This happened with an Admin level account in Windows 7, not a Guest account, so I wonder if maybe the installer might need a tweak to correct that.
The software seems to run fine despite the .NET failure, so I don't know if that's relevant to the muxing failure or not.
Here's the project zipped up with 1 minute assets.
http://depositfiles.com/files/qu9nnvutp