Carsten,

1. Are you running the very latest version of VFPEncryption? Make sure you've downloaded the latest version from Craig's site.

2. If you have a reproducible problem, Craig is very good about updating his libraries.

3. In the meantime, a work around may be to use strconv() to convert your source data to hex and then encrpypt the hex output. I understand that this will double the size of your data.

Malcolm