Q 2006 Dlx on Vista Home Premium
Just recently started adding use of attachements, mostly attacheming a pdf of my pay statements to the deposit transaction. Going back and double checking a few I found a case where I attached the wrong statement to a particular transaction.
Select transaction, then Edit -> Attachments ... -> Delete Attachment "Are you sure you want to delete this attachment?" -> yes "The process cannot access the file because it is being used by another process" -> OK
There are no other apps open, and I even tried restarting the PC to clear any potential unreleased locks.