Version:           1.11.2 (using KDE 4.2.2)
Compiler:          gcc (Gentoo 4.3.3-r2 p1.1, pie-10.1.5) 4.3.3 
OS:                Linux
Installed from:    Gentoo Packages

If a message has a colon (:) in its title, it is sometimes impossible to save the message as an mbox file using Right Click>Save As.

For example, I have a message I sent with the title "URGENT: Document for Signature".  It is in my sent items folder.  I want to save it to a relevant place in the file system.

I do Right Click>Save As and get a dialog that pops up saying:

 URL cannot be listed
 URGENT:/

With an OK button.  Clicking the OK button causes the dialog to disappear and reappear instantaneously.  Clicking it again causes a file selection dialog to appear, but with URGENT:/ at the top where a directory should be.

By entering a path and file name manually, it is sometimes possible to save the message, but sometimes this fails too.

Message titles that begin Re: do not seem to cause this problem, and nor does a message title that begins "Our Ref: 1015.001  Your Ref: ".