Drag and drop is working for me on windows 10 with vcl, dxf, pdf, png, and dji UAS.
One issue I did have was the first vce project I tried to open from 5.6 in 5.7 it said the file was corrupted. I was able to open other projects but not that one. I went and opened it in 5.6 and it opened fine. Still wouldn't open in 5.7. After some random screwing around in 5.6 it was able to open in 5.7 and have yet to have any other issues with it.
------------------------------
Wayne Welshans
------------------------------