Problem unpacking some plugins...

[flashingcursor]

Using the FTP method:

Installing Plugin from uploaded file: oiopub-pro-v2.26.zip
Unpacking the package…

Could not create directory. /domains/flashingcursor.com/public_html/wp-content/upgrade/oiopub-pro-v2.26/oiopub-direct/modules/2checkout

This happened with one other plugin a week or two back, but I figured it was just a bad file ... this has been tested on a 2.9 install / same environment and it works fine.

A few things to confirm:

• This only happens with some plugins
• This happens all the time with these plugins?
• Can you provide a link to a plugin zip which suffers from the problem?

It's a commercial plugin. I've asked the author permission to give you a copy. Waiting to hear back. (Might need your email address for that)

It does happen every time with this particular plugin.

Most plugins I've tried work fine. There has been one other occasion that caused this same error, but I cannot find the plugin archive to try to duplicate the issue. Will keep trying and update here.

We're going to need some feedback on this or this ticket will be closed.

From what I'm reading, the plugin is not licensed under the GPL but it is not restricted by site. I doubt the developer/author would have a problem with loaning it to the core team without permission first. It may reveal a bug.

I have had this same problem some minutes ago. I was trying to install via backend the plugin "Maintenance Mode" [1] and got this error:
"Incompatible Archive. PCLZIP_ERR_BAD_FORMAT (-10) : Invalid archive structure".

I tried this on my online server and in localhost.

Manually unpacking the compressed file works fine, though (on Linux).

[1] ​http://wordpress.org/extend/plugins/maintenance-mode/

Problematic plugin emailed to Andrew. =)

Plugin also forwarded to Dion.

I can confirm that this plugin installs on 2.9 and does not on trunk.

Could not create directory. C:\xampp\htdocs\commit/wp-content/upgrade/oiopub-pro-v2.26/oiopub-direct/modules/2checkout

Notice: Undefined property: Plugin_Installer_Skin::$result in C:\xampp\htdocs\commit\wp-admin\includes\class-wp-upgrader.php on line 1228

Having no problems with the maintenance mode plugin however.

That zip file is failing the Consistency checks of the PHP Zip Extension, Raising ZIPARCHIVE::ER_INCONS.

PclZip is handling that case however, as are other Zip tools.

The problem that is occuring, is that a oiopub-direct/modules/ node does not exist within the archive, however, child nodes oiopub-direct/modules/2checkout for example do exist. If there was a file within oiopub-direct/modules then even if the node didnt exist, some compat functionality inside the unzip class would work around it, As it is, as you can see, its failing.

I'll work up some kind of compat code for this case

ZIPARCHIVE::ER_INCONS.

That error being "Archive is Inconsistent"

(In [14811]) Ensure that the entire folder structure exists within the $needed_folders array before attempting to create folders. Fixes cases where the Zip file does not contain a node for a folder which contains subfolders without files in the same level. Fixes #13171

Ok, now it works: the plugin is installed successfully.

Similar problem (latest trunk version, localhost with xampp on Windows):

Some plugins (and only some versions) end with "Could not remove the old plugin."

Example (plugin wp Time Machine):
Upgrade (yesterday) wp-time-machine from version 1.9.1 to 1.9.3 = OK.
Upgrade (today) wp-time-machine from version 1.9.3 - 1.9.4 = Upgrade failed.

The same problem appeared for me also with following plugins (in last two weeks):
mass-custom-fields-manager 1.2 - 1.3
pods 1.8.7 - 1.8.8
gd-taxonomies-tools 1.1.8 - 1.1.9
odlinks 1.1.1-a - 1.1.2-a

This strange behaviour is somehow random, some plugins are not affected, some are affected only with particular version...

pavelevap: I'm going to open a new ticket for your problems, as they're unrelated to the core problem of this ticket. I've got some followup questions there too. #13571