I did sort of find a fix, I found that I can simply remove encryption - but it takes about 5 minutes on a large file, and then it works. Not sure what I did the other day to restore the file status but something worked and stopped this behaviour - I've tried to reproduce it to no avail. But as I said I can run the files if I decrypt them.
But.... a bunch of other files that ran perfectly also went 'bad' after transfering the file from one directory to another. All the files are media files - AVI MP3 MPEG MPG etc. Older files seem to be OK, but I'm not sure this is consistant - but some files are now not 'runable' and some are just like they were before the copy action.
I don't know how this file became encrypted, I did not do it, and the original was not encrypted as far as I can tell. And I don't know how copying it affect the other files in the destination directory.
And in safe mode all the files are moveable and deletable.
So how do I stop this behaviour. This behaviour just started, as none of these files were doing this up until a week ago or so. Explorer is also 'sticky' - It will not shut down properly with Windows shut downs - maybe there is some clue here, but I just don't know.
And even though they are encrypted, how come I can't view them?
Thanks.