Jerry I have had TW4.0 publish and show the loading screen but never get to the tour and I caused it 2 different ways. (for ref I'm using version 4.00.081128)
Both ways are under the publish settings.
1).Publish settings - format tab - filename:
when I had an unusable or bad file name in here. I like to keep the publish name same as the save name for the project so one time as I cut and pasted I still had the file extension on it. (ie goodtour.tw ) this made the tour not work until I fixed my type-O.
2.) Publish settings - General tap - Default Movie:
I updated a tour once deleted the custom movie I had created as part of the updated. How ever the Default Movie setting was still trying to load this non-existent movie and the tour would not load.
3.) a side note for people who have been using TW3.0 and switched to TW4.0 the published files are saved in a different place.
TW3.0 saved the published tour in the flashvr folder
TW4.0 saves it in a new folder that matches the file name you enter in the 1).Publish settings - format tab - filename: area
I updated a tour from TW3.0 to TW4.0 and the updated didn't happen, reinstalled the program ect. This drove me crazy until I figured out the tour was saved in a different folder and I had been loading the wrong one the whole time and not the new updated tour.
I hope this helps.
Best regards to all