Different behaviour when mounted as a NTFS Folder then when mounted as Drive

[EdwinDijkshoorn]

USING MIrror
If i have a PDF file and try to open that with Adobe Acrobat Reader.

If mounted as a Drive (e.a Mirror.exe /r D:\Test /l R: /d /t ) Mirror can open PDF files in Acrobat,
however
If i use mirror and mount as a Folder (e.a. Mirror.exe /r D:\Test /l D:\DokanTest3 /d /t ) I get an access denied error.

There are some more vague errors that only seem to occur when mounted as a Folder, but this is the one most easily reproduced.