[imp] Unable to create folder in IMP

[Jason Cook]

Hello,

When attempting to create a new IMAP Folder (in this case, 'Jobs'),
I receive the following message: 

The folder "INBOXJobs" was not created. This is what the server said:
Invalid mailbox name.

It would appear that IMP is not auto-detecting my namespace and
delimiters properly (because of the lack of a '.' between INBOX and Jobs),
but a run of test.php shows that it is:

The following IMAP server information was discovered from the remote server:
Namespace Information
NAMESPACE: "INBOX."
DELIMITER: .
TYPE: personal

NAMESPACE: "#shared."
DELIMITER: .
TYPE: shared

NAMESPACE: "shared."
DELIMITER: .
TYPE: shared 

What could be the problem here? I am running IMP H3 (4.1.2) on Horde 3.1.2.

Thanks in advance,
Jason