By a pure coincidence, I found a small problem today (not related to version 6.0, it has been present before).
If I create a directory called %TEMP% and copy some files inside, it's not possible to start them - I only get "File not found" message. The same behavior occurrs for any other existing environment variable name (i.e. it doesn't have to be only %TEMP%). I would guess the directory name is passed to ExpandEnvironmentStrings() mistakenly, or something like that.
Well, it's not very usual, to have this kind of directory names, so it's not a big problem really

My OS is Windows 98 SE.
Also, the problem with disappearing files in Ctrl+B listing is still present in version 6...
To have some good news as well - the operations on files (such as Unpack and Execute) in PK_CAPS_BY_CONTENT-type of packer plugins work now!
A great piece of work for sure!
Thanks!