Downloading a Zip : file is corrupted

[nerovik]

Good evening,

I have spent a lot of time with Frantz (french forum) to find out a solution. I have also looked through the entire forum for a solution. I feel desperate.
My problem is the following : I select one picture and click Add to Favorites. Then I click on My favorites and click dowload as Zip file. The pictures.zip cannot be uncompressed. 7-zip (or whatever) says that the header file is corrupted.

It works perfectly on a public website (http://liminaires.free.fr) but it does not work at home nor at my office.

My local Web server is Wamp 2.0 - PHP Version 5.2.5
Windows Vista
IE7 or Firefox (latest versions)
Php-zip.dll is activated.
Phpinfo is attached

We have already compared our configurations with Frantz (French forum). I can reproduce this problem on several different PCs  (windows XP) at my office.

I cannot find out how I can solve this problem and it is very (very) urgent for me to solve it. The aim is to present a photo gallery at my office (Xampp server - virtual machine).
I can only give access to my PC at home. Let me know if you can help me. Thanks in advance.

[Nibbler]

Post an example of the corrupted zip file.

[nerovik]

Please find enclosed pictures.zip.
Thanks for your prompt reply.

[Nibbler]

There's some strange characters at the start of the file. It's not whitespace. Perhaps a BOM or something. Does it work if you switch to english or change theme?

[nerovik]

That's right, the header of the zip file is corrupted.
It does not work either in english.
Just let you know that I have reinstalled (fresh install) coppermine => same problem
I have modified chaoticsoul template but same problem occur with classic theme.
PYAP (from the french forum) told me that it should come from my server (Wamp). But I also tried with Xampp (another server).

[Nibbler]

Try changing

Code Select Expand


$zip->download_file();


to

Code Select Expand


ob_end_clean();
$zip->download_file();


in include/archive.php

[nerovik]

$zip->download_file(); does not exist (?)

[Nibbler]

Sorry, I meant zipdownload.php

[nerovik]

You are fantastic! Thank you so much. Can you explain to me quickly ?

[Nibbler]

It makes sure nothing is sent to the browser before the zip file begins.

[Joachim Müller]

@Nibbler: should this go into the core as a precaution for others with similar issues?

[Joachim Müller]

@Nibbler: ignore the above question - I just performed a checkout and noticed that you already added your code to the core both of cpg1.4.x as well as cpg1.5.x. Should have done this before posting my silly question, sorry.

[nerovik]

Problem reopened:
It works on Windows Vista (IE7/Firefox) but it still does not work on Windows XP (IE6).
Thanks for your help!

[Joachim Müller]

Merged you new thread with the existing one. Don't double post; there is a reason why solved threads don't get locked immediately: you can still reply to them if it seems like a solved issue needs to be looked into further.

I find it hard to believe though that this should be related to the client OS: after all, the zip file creation happens on the server, not on the client: how could a client OS possibly interfere then? Anyway, tested this on Windows XP Professional German SP2 with Firefox 2.0.0.11 and IE7.0.5730.11 on your site - both work as expected, the zip files are perfectly OK.

[nerovik]

I confirm  : Internet Explorer 6 seems to be my source of annoyance!

[aldog]

I was having this same problem and I did what nibbler suggested. and now I get this problem

!   C:\Documents and Settings\alans\Desktop\pictures.zip: The archive is either in unknown format or damaged


any suggestions?

[Sami]

- Attach that file to this thread
- Post a link to your gallery

[aldog]

my gallery - http://ad6storieshigh.com/gallery/

thanks

[Sami]

Zip File is fine !!!
Also I downloaded same file my self and it's fine too!

[aldog]

Ya I guess you're right, that one does work. I just downloaded another one with 6 files and got a corrupted error again.


here it is http://www.ad6storieshigh.com/uberdownloads/personal/pictures(3).zip
500kb limit on the attachments. hope that helps.