I take your point, I probably should have made it clear that 'I think' it has little or nothing to do with the actual file. 'I think' it occurred when the mouse left the bounds of the game window and I clicked on the something in my browser.
It's taken 2 days to come back to me, and in future I'll attach the file as well.
Again, from a Design perspective, I think if you found a way to streamline the bug reporting process it might be better for everyone. All the warnings and strict procedures tend to indicate it's had a lot of problems being effective in the past.
Submitting 3 bug reports in a row and learning to do half a dozen things from scratch on several different websites (all with their own bugs and peculiarities) for me at least, is overwhelming and leads to more mistakes.
I don't have the solution, yet, and I've found that all bug reporting systems leave much to be desired.