hi. thanks for the offer of help, and apologies for my delayed response. I was not familiar with that method, however when I tried it, it resulted in a subfolder with 47GB of my videos together [i.e. those that make up the film in question], making it infeasible to share.
In order to recreate the situation, I then saved the clips that gave rise to the aforementioned problem, and creates a new video with these clips, in the hope that I see the same issue, which could then be shared. However the problem did not manifest itself.
I think my problem must be in the complexity of my video somehow. For example, I can see video tracks 1, 4 and 5. I have no idea where 2 and 3 might be, or how to uncover them if they are simply hidden. Doing so might be a clue in my dilemma.
Researching show/hide clips I came across a piece in the help [http://help.nchsoftware.com/help/en/videopad/win/help.pdf, page 27] whereby whole tracks can be hidden by clicking on the 'eye'. The result is exactly what I see in mine, however it can't be this as this would hide the whole track. What I am experiencing is just selected clips on track 1 being hidden, and I can't find a similar option anywhere on a 'clip level'. Also, the film looks fine in its entirety within VideoPad. The 'disappearance' only manifests itself once exported.
Any ideas?
thanks a lot