BUG extracting mmBlocks files

[KeitaroBR]

Hi,

we're testing the VCLZIPPro and found what seems to be a bug in it while working with big mmBlocks files (4x 1GB files). As we try to uncompress the files an error is returned indicating that the uncompressed size is larger than the one indicated in the zip file.

Because of it, we can't restore the files within the archive. We've configured the FirstBlockSize and BlockSize while zipping to 1GB size.

[Kevin]

Can you tell me:

1) What version of Delphi/BCB are you using?
2) Are you getting this error on all files in the archive or just certain ones or just one file?
3) Are any of the files you are backing up open at the time that they were compressed?
4) Does this happen every time you zip the file with > 1GB blocks?

Kevin

[KeitaroBR]

1) Delphi 6
2) Only on files which are 1GB or bigger
3) No
4) I've found the problem resides on having files 1GB or bigger inside the ZIP (the ZIP block size doesn' matter). I've "pre-divided" the files I'm compressing in 500mb ones and the problem was avoided(but not solved of course).


Tks for answering

[Kevin]

Does this happen when you zip a file larger than 1 gig into a normal zip file?

Also, you are unzipping with VCLZip right? I mean, you aren't using a different zip utility to unzip?

Kevin

[KeitaroBR]

I haven't tried with normal zips but even when the resulting set is just 1 file (and vclzip renames it to .zip) the problem ocurs.

And yes, I'm uncompressing with VclZIP

Tks

[Kevin]

I'm not able to recreate this so far, but...

1) Be extra sure you are using VCLZip Pro instead of Lite. The ThisVersion property in the Object inspector shoud be 3.04 not 2.23

2) Also, did you get the email I sent you?

[KeitaroBR]

1) I've tried with the demo included in the 3.04 release and the problems ocurs


2) No, I didn't...

[Kevin]

I have sent you a private message through this forum. Let me know if you did or did not get it.

Kevin