[imp] IMP 4.3.3 (final)

[Marco Favero]

Hi all,
after upgrading to this version using horde-webmail-1.2.2 I notice  
what follow using Silver theme.
If I open a message and I select "Headers", "Show All Headers" (but  
also Show Mailing List Information), no headers were shown. Browser  
come back to previous messages tree, and report this info:

"Requested message not found."

What does it happen?
Could you help me?

I thank you very much for every hints.
With kind regards
Marco