According to the manual, there is no comparison to "RD /S /Q". Personally, I'd think this is expected behavior - items are marked read-only for a reason. If there isn't a /R switch, then it should not remove read-only items. Both Move and Del commands have specific switches to allow changing R/O files.

It might be a nice feature to have a /R switch added to the RD command, but I don't think this is a bug.

You can try something like:
 Code:
SetFileAttr($Folder, GetFileAttr($Folder) & 254)
Rd /S $Folder

to be sure the R/O attribute bit is turned off before you remove the folder.

Glenn
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Actually I am a Rocket Scientist! \:D