Fill » List filenames in folder... The filetypes option was case sensitive. This now no longer is. So it doesn't matter if you search for *.xls or *.XLS for example.
We have also been working on version 4.3 the past months. This version will have many improments. A a pre-release of version 4.3 is now tested by selective group of people. Probably by the end of January we will put a public pre-release of that new version on the website.