Thread:Project:Support desk/Problem uploading files: Could not create directory "mwstore://local-backend/local-public/5/54".

Hello, I upgraded our wiki from 1.16 to 1.21.0rc5. I can no longer upload files. I get the error: Could not create directory "mwstore://local-backend/local-public/5/54". I also get Internal errors: Error storing file in '/tmp/php2k23Xw': Could not create directory "mwstore://local-backend/local-temp/c/ca".

Backtrace:


 * 1) 0 /var/www/html/wiki/includes/upload/UploadBase.php(836): UploadStash->stashFile('/tmp/php2k23Xw', 'file')
 * 2) 1 /var/www/html/wiki/includes/upload/UploadBase.php(849): UploadBase->stashFile
 * 3) 2 /var/www/html/wiki/includes/upload/UploadBase.php(858): UploadBase->stashFileGetKey
 * 4) 3 /var/www/html/wiki/includes/specials/SpecialUpload.php(332): UploadBase->stashSession
 * 5) 4 /var/www/html/wiki/includes/specials/SpecialUpload.php(425): SpecialUpload->showUploadWarning(Array)
 * 6) 5 /var/www/html/wiki/includes/specials/SpecialUpload.php(172): SpecialUpload->processUpload
 * 7) 6 /var/www/html/wiki/includes/SpecialPage.php(613): SpecialUpload->execute(NULL)
 * 8) 7 /var/www/html/wiki/includes/SpecialPageFactory.php(487): SpecialPage->run(NULL)
 * 9) 8 /var/www/html/wiki/includes/Wiki.php(291): SpecialPageFactory::executePath(Object(Title), Object(RequestContext))
 * 10) 9 /var/www/html/wiki/includes/Wiki.php(565): MediaWiki->performRequest
 * 11) 10 /var/www/html/wiki/includes/Wiki.php(458): MediaWiki->main
 * 12) 11 /var/www/html/wiki/index.php(59): MediaWiki->run
 * 13) 12 {main}

I have tried changing ownership and permissions on all files and sub-directories and I just cannot figure out what I am doing wrong. any help would be most appreciated. Below is my installed software. Installed software Product 	Version MediaWiki 	1.21.0rc5 PHP 	5.3.8 (apache2handler) MySQL 	5.1.60 Entry point URLs Entry point	URL Article path	/wiki/index.php/$1 Script path	/wiki index.php	/wiki/index.php api.php	/wiki/api.php load.php	/wiki/load.php