Contacts folder cannot be found

[Louise]

I have a rule set up on my PC which sends a copy of any e-mails I receive
from a colleague into a personal folder. The rule works fine and all my
e-mails are copied, as requested.

However, I have recently assigned a Task to her (via tasks) and when she
replied, and a copy of this was sent to her Folder by way of the rule, it
won't let me delete this e-mail from her folder? It says 'Contacts folder
cannot be found'.

Is this because it is in a personal folder on the C; drive and it cannot
find the Tasks list? If so, how do I delete the e-mail???

Thank you.