Your text file is still queued, so I can't see it, but even then it would be doubtful it would be any help to solve your problem. The not loading message is most likely caused by another process running in the background, an incompatible codec in your material and/or project or a driver issue. You need to be far more specific with lots of extra details if you want our help. Look in the WIKI under troubleshooting and try all the suggested steps. If that does not help, answer the 16 questions at the bottom to start with.
I've finally been able to see the file. First question: are you using XP32 with SP3 or Windows Server 2003? Next one: are your drivers up-to-date?
xp professional sp3
So far as I can ascertain the drivers are OK.
I have just discovered that the media cache had grown huge, I have deleted it and am currently defragging to see if that helps.
I doubt if it is some individual file in a project that is the problem as I cannot even run it from the start menu.
I think I may have fixed it. I deleted a file called watchinfo.xml in application data and it loads now.
Whether it encodes properly I shall have to find out.
Thank You Rex, this solved the problem for me as well.