I doing a test with the version 1.76. I commented {$DEFINE NO_SPAN} in ZipConfig.inc When I try compact with span option I get the error 197123: Zip file structure invalid The same code and files to zip with version 1.75 was compacted successfully Thanks Alfeu ----------- To unsubscribe from this list, send an empty e-mail message to: delphizip-request@xxxxxxxxxxxxx and put the word unsubscribe in the subject.