The name of one of the folders containing files to be added contains characters that cannot be converted to the ANSI character set, and WinZip® cannot continue this operation.
A full treatment of character sets is beyond the scope of this document. Briefly, however, some file and folder names are represented on your Windows computer using a set of characters known as Unicode. WinZip must translate those characters into a simpler set of characters known as ANSI .
In most cases this presents no difficulty because both character sets include all of the most commonly used characters. However, because the Unicode character set is much larger than the ANSI character set, it is possible for folder names to contain Unicode characters that have no ANSI equivalent in your computer's current configuration.
The simplest solution is to rename the folder using only common characters (letters A-Z, digits 0-9, spaces, etc.). When this has been done, WinZip will be able to access the folder successfully and you can try the operation again.
If you are an experienced Windows user, you may be able to change your current ANSI code page to accommodate the invalid character(s). Consult your Windows documentation for further information.