SmartFTP Won't Release File After Upload

I've used SmartFTP along with HTML editor NoteTab recently without a hitch. After the latest update, however, I've found that SmartFTP does not release the file(s) I just uploaded. When I go back to NoteTab and try to save one of these files, I get the following error message:

"The process cannot access the file because it is being used by another process".

I can only save the file after going back to SmartFTP and clicking on another file.

While this is no show stopper, it is an annoyance.

Unable to reproduce. Please write a proper bug report.