Which version of the Xceed Zip Compression Library are you using? If you are not using the latest version (6.5), are you able to download and try the component to see if it meets your needs? Also, are you able to send us a small self-contained sample application so that we can investigate to see exactly what you are doing? You can download the trial here (trial period is valid for 45 days).
Imported from legacy forums. Posted by Marc [Xceed] (had 1251 views)