I've been looking into this a bit more. I see the error generated when I bring up my list of folders. The folders are all the files in my home directory on a UNIX system. Some of those file names have an "&" character in them, and that is what generates the error.
I've done a bit of code tracing, and I see that iconv is being called, and mbstring is being called, and then the routine utf7_to_utf8 is called to do the conversion in the file ~program/lib/utf7.inc. The routine utf7_to_utf8 does some special handling of the "&" character, and is returning an error.
I'm trying to figure out where the problem lies. Is it in the assumption that the folder list is in UTF7-IMAP? It should be ascii I would think. From what I've read it sounds like UTF7 and UTF8 are similar, so why the special treatment of "&"? Any clarification on this would be greatly appreciated. It sounds like this is a common error for RoundCube users, and it'd be nice to get it resolved.
Thanks so much!
Jackie