The source of trouble is the unusual zip format.
I use zipgenius ver 6, this tools extracted everything in the past, except 3dc8.1.3. The trick with extracting by the explorer worked. Interestingly the german error message is different and points in an other direction compared to the errors reported earlier in this aection. I really think the zip creation of the 3dc distribution should be revised to something which is compatible, or at least a note on the download site <!– s:-) –><img src="{SMILIES_PATH}/icon_e_smile.gif" alt="" title="Smile" /><!– s:-) –>
Ytracks