The mail filtering doesn't work as it used to in Pine <= 4.04. Biggest problem is that pgp4pine stopped functioning. The error is that Pine can't read the tempfile. Probably the name has changed or something like that.
Can you describe your filtering setup a bit? (check if it works with version shipped with 6.2 first
Since this is reported against an old version and we at least have gnupg working with the rawhide version and I haven't been able to get more info on it, I assume this bug has been fixed. Please reopen with more details if this isn't the case