Next time you open the program does the file end up 100% downloaded? Which version of LW are you using?

In such scenarios, I cancel from download window only if using LW 4 & re-select from search results. Else re-search the topic. This does not always work. I had same scenario yesterday with an audio file. I found the file is now in my download folder.

For LW 5, do not cancel from download window else this will delete the file!!!

Why this happens I do not know. Sometimes files stall, even during the comparison stage at end of downloading when verifying.