Downloads page blank after server move

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robmoss2k
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Downloads page blank after server move

Post by robmoss2k » Mon Sep 03, 2012 1:20 pm

I've been tasked with moving a Joomla site from a third party's server to our own servers. I followed these instructions:

http://docs.joomla.org/Copying_a_Joomla_website

Previously the site was running on Joomla 2.5.2, with old versions of Apache, PHP and MySQL, on some sort of Linux OS (I don't have console access so can't tell exactly). I've used WAMP (http://www.wampserver.com/en/) on Windows Server 2008 R2 (I'd rather use Ubuntu but I have company policy to follow sadly) and upgraded to Joomla 2.5.6. A few extensions were broken but the newest version of each has fixed it. However, I have one remaining problem.

The downloads page they have is completely blank. It returns 220 bytes of header information and 0 bytes of content. I've confirmed by checking the old site that the downloads page should indeed work properly. How do I go about diagnosing what's up, or perhaps this is a common problem? I believe it's a jDownloads page, but I'm so new to this that I don't actually know how to work out how to turn the URL /index.php/downloads into something I can find in the Joomla CMS.

I did try searching, but "blank download page" turns up an awful lot of stuff that's very not relevant.

FPA info below, in case it helps at all.

Thanks in advance for any help anyone can give me!
Forum Post Assistant (v1.2.2) : 3rd September 2012 wrote:
Basic Environment :: wrote:Joomla! Instance :: Joomla! 2.5.6-Stable (Ember) 19-June-2012
Joomla! Platform :: Joomla Platform 11.4.0-Stable (Brian Kernighan) 03-Jan-2012
Joomla! Configured :: Yes | Writable (666) | Owner: 0 (uid: /gid: ) | Group: 0 (gid: ) | Valid For: 2.5
Configuration Options :: Offline: 0 | SEF: 1 | SEF Suffix: 0 | SEF ReWrite: 0 | .htaccess/web.config: No | GZip: 0 | Cache: 0 | FTP Layer: 0 | SSL: 0 | Error Reporting: default | Site Debug: 0 | Language Debug: 0 | Default Access: 1 | Unicode Slugs: 0 | Database Credentials Present: Yes

Host Configuration :: OS: Windows NT | OS Version: 6.1 | Technology: AMD64 | Web Server: Apache/2.4.2 (Win64) PHP/5.4.3 | Encoding: gzip,deflate,sdch | Doc Root: C:/wamp/www | System TMP Writable: Yes

PHP Configuration :: Version: 5.4.3 | PHP API: apache2handler | Session Path Writable: Unknown | Display Errors: 1 | Error Reporting: 4177 | Log Errors To: | Last Known Error: | Register Globals: | Magic Quotes: | Safe Mode: | Open Base: | Uploads: 1 | Max. Upload Size: 2M | Max. POST Size: 8M | Max. Input Time: 60 | Max. Execution Time: 30 | Memory Limit: 128M

MySQL Configuration :: Version: 5.5.24-log (Client:mysqlnd 5.0.10 - 20111026 - $Id: b0b3b15c693b7f6aeb3aa66b646fee339f175e39 $) | Host: --protected-- (--protected--) | Collation: utf8_general_ci (Character Set: utf8) | Database Size: 1.21 MiB | #of _FPA_TABLE: 79
Detailed Environment :: wrote:PHP Extensions :: Core (5.4.3) | bcmath () | calendar () | com_dotnet (0.1) | ctype () | date (5.4.3) | ereg () | filter (0.11.0) | ftp () | hash (1.0) | iconv () | json (1.2.1) | mcrypt () | SPL (0.2) | odbc (1.0) | pcre () | Reflection ($Id: 1cf65cee164ed57874ce2d29e5c46b82f6139524 $) | session () | standard (5.4.3) | mysqlnd (mysqlnd 5.0.10 - 20111026 - $Id: b0b3b15c693b7f6aeb3aa66b646fee339f175e39 $) | tokenizer (0.1) | zip (1.9.1) | zlib (2.0) | libxml () | dom (20031129) | PDO (1.0.4dev) | Phar (2.0.1) | SimpleXML (0.1) | wddx () | xml () | xmlreader (0.1) | xmlwriter (0.1) | apache2handler () | mbstring () | gd () | mysql (1.0) | mysqli (0.1) | pdo_mysql (1.0.2) | pdo_sqlite (1.0.1) | mhash () | xdebug (2.2.0) | Zend Engine (2.4.0) |
Potential Missing Extensions :: openssl | curl | suhosin |

Switch User Environment (Experimental) :: PHP CGI: No | Server SU: No | PHP SU: No | Custom SU (LiteSpeed/Cloud/Grid): Yes
Potential Ownership Issues: No

Apache Modules :: core | mod_win32 | mpm_winnt | http_core | mod_so | mod_access_compat | mod_actions | mod_alias | mod_allowmethods | mod_asis | mod_auth_basic | mod_authn_core | mod_authn_file | mod_authz_core | mod_authz_groupfile | mod_authz_host | mod_authz_user | mod_autoindex | mod_cgi | mod_dir | mod_env | mod_include | mod_isapi | mod_log_config | mod_mime | mod_negotiation | mod_setenvif | mod_php5 | Apache/2.4.2 (Win64) PHP/5.4.3 |
Potential Missing Modules :: mod_rewrite | mod_expires | mod_deflate | mod_security | mod_evasive | mod_dosevasive | mod_ssl | mod_qos | mod_userdir |
Folder Permissions :: wrote:Core Folders :: images/ (777) | components/ (777) | modules/ (777) | plugins/ (777) | language/ (777) | templates/ (777) | cache/ (777) | logs/ (777) | tmp/ (777) | administrator/components/ (777) | administrator/modules/ (777) | administrator/language/ (777) | administrator/templates/ (777) |

Elevated Permissions (First 10) :: None administrator/ (777) | administrator/cache/ (777) | administrator/components/ (777) | administrator/components/com_admin/ (777) | administrator/components/com_admin/controllers/ (777) | administrator/components/com_admin/helpers/ (777) | administrator/components/com_admin/helpers/html/ (777) | administrator/components/com_admin/models/ (777) | administrator/components/com_admin/models/forms/ (777) |
Database Information :: wrote:Database _FPA_STATS :: Uptime: 253560 | Threads: 1 | Questions: 8145 | Slow queries: 0 | Opens: 225 | Flush tables: 1 | Open tables: 64 | Queries per second avg: 0.032 |
Extensions Discovered :: wrote:Components :: SITE :: com_mailto (2.5.0) | com_wrapper (2.5.0) |
Components :: ADMIN :: com_admin (2.5.0) | aiContactSafe (2.0.17.stable) | aiContactSafe (1.0.0) | aiContactSafe module (1.0.12.stable) | aiContactSafe - Form (1.0.15.stable) | aiContactSafe - Link (1.0.10.stable) | com_banners (2.5.0) | com_cache (2.5.0) | com_categories (2.5.0) | com_checkin (2.5.0) | com_config (2.5.0) | com_content (2.5.0) | com_cpanel (2.5.0) | com_finder (2.5.0) | com_installer (2.5.0) | jDownloads Top (2.0.1) | jDownloads (1.9.0 Stable ) | com_joomlaupdate (2.5.0) | com_languages (2.5.0) | com_login (2.5.0) | com_media (2.5.0) | com_menus (2.5.0) | com_messages (2.5.0) | com_modules (2.5.0) | com_newsfeeds (2.5.0) | com_plugins (2.5.0) | com_redirect (2.5.0) | com_search (2.5.0) | com_templates (2.5.0) | com_users (2.5.0) | com_weblinks (2.5.0) | com_xmap (2.2.1) |

Modules :: SITE :: mod_articles_archive (2.5.0) | mod_articles_categories (2.5.0) | mod_articles_category (2.5.0) | mod_articles_latest (2.5.0) | mod_articles_news (2.5.0) | mod_articles_popular (2.5.0) | mod_banners (2.5.0) | mod_breadcrumbs (2.5.0) | BT Login (1.1) | mod_custom (2.5.0) | mod_feed (2.5.0) | mod_finder (2.5.0) | Flexi Custom Code (1.3) | mod_footer (2.5.0) | FreeSlider SP1 (1.4.0) | mod_highlighter_gk4 (GK4 1.9) | mod_languages (2.5.0) | mod_login (2.5.0) | mod_menu (2.5.0) | Nice Social Bookmark (1.7.4) | Optimized Campaign (1.1.0) | Simple Spotlight (2.2) | mod_random_image (2.5.0) | mod_related_items (2.5.0) | mod_search (2.5.0) | SP News Highlighter (3.1.0) | mod_stats (2.5.0) | mod_syndicate (2.5.0) | mod_users_latest (2.5.0) | mod_weblinks (2.5.0) | mod_whosonline (2.5.0) | mod_wrapper (2.5.0) |
Modules :: ADMIN :: mod_custom (2.5.0) | mod_feed (2.5.0) | mod_latest (2.5.0) | mod_logged (2.5.0) | mod_login (2.5.0) | mod_menu (2.5.0) | mod_multilangstatus (2.5.0) | mod_popular (2.5.0) | mod_quickicon (2.5.0) | mod_status (2.5.0) | mod_submenu (2.5.0) | mod_title (2.5.0) | mod_toolbar (2.5.0) | mod_version (2.5.0) |

Plugins :: SITE :: plg_authentication_gmail (2.5.0) | plg_authentication_joomla (2.5.0) | plg_authentication_ldap (2.5.0) | plg_captcha_recaptcha (2.5.0) | plg_content_emailcloak (2.5.0) | plg_content_finder (2.5.0) | plg_content_geshi (2.5.0) | plg_content_joomla (2.5.0) | AllVideos (by JoomlaWorks) (4.4) | plg_content_loadmodule (2.5.0) | plg_content_pagebreak (2.5.0) | plg_content_pagenavigation (2.5.0) | plg_content_vote (2.5.0) | plg_editors_codemirror (1.0) | plg_editors_tinymce (3.5.2) | plg_editors-xtd_article (2.5.0) | plg_editors-xtd_image (2.5.0) | plg_editors-xtd_pagebreak (2.5.0) | plg_editors-xtd_readmore (2.5.0) | plg_extension_joomla (2.5.0) | plg_finder_categories (2.5.0) | plg_finder_contacts (2.5.0) | plg_finder_content (2.5.0) | plg_finder_newsfeeds (2.5.0) | plg_finder_weblinks (2.5.0) | plg_quickicon_extensionupdate (2.5.0) | plg_quickicon_joomlaupdate (2.5.0) | plg_search_categories (2.5.0) | plg_search_contacts (2.5.0) | plg_search_content (2.5.0) | plg_search_newsfeeds (2.5.0) | plg_search_weblinks (2.5.0) | plg_system_cache (2.5.0) | plg_system_debug (2.5.0) | System - Helix Framework (1.9.0) | plg_system_highlight (2.5.0) | plg_system_jdownloads (2.0.1) | plg_system_languagecode (2.5.0) | plg_system_languagefilter (2.5.0) | plg_system_log (2.5.0) | plg_system_logout (2.5.0) | PLG_SYSTEM_MODALIZER (2.6.4) | PLG_SYSTEM_NNFRAMEWORK (12.3.1) | plg_system_p3p (2.5.0) | plg_system_redirect (2.5.0) | plg_system_remember (2.5.0) | plg_system_sef (2.5.0) | plg_user_contactcreator (2.5.0) | plg_user_joomla (2.5.0) | plg_user_profile (2.5.0) |
Templates Discovered :: wrote:Templates :: SITE :: atomic (2.5.0) | beez5 (2.5.0) | beez_20 (2.5.0) | shaper_simplicity_ii (1.5.0) |
Templates :: ADMIN :: bluestork (2.5.0) | hathor (2.5.0) |
Last edited by humvee on Thu Sep 06, 2012 8:15 am, edited 1 time in total.
Reason: Marked as resolved as per OP changed to linux server

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humvee
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Re: Downloads page blank after server move

Post by humvee » Mon Sep 03, 2012 6:44 pm

[Mod note: Moved from Installation Forum to IIS Installation Forum;]

Whilst I appreciate that you are not using IIS 7+ at the moment but WampServer 2 it may be (particularly if the company are looking to go live from their own servers) that you should be looking to go with IIS 7+ if Winblows is their preference.

WS2 will take considerable configuration and checking to ensure its compatibility for live (even intranet) use.

A start might be to download and install ZendServer CE it can be used over the top of WS2 or used as a complete installation package for IIS or Apache, MySQL or MSSQL, and PHP et al.

Anyway the specific question requires identifying the specific component for the downloads section of the site. You are right in identifying this as jDownloads it would seem and you should check out the latest versions of the software and the developers own site for any known issues that may reflect the issues you are having.

jDownloads on the JED

robmoss2k
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Re: Downloads page blank after server move

Post by robmoss2k » Tue Sep 04, 2012 9:22 am

Thanks for the advice. I'll give it a go and report back (or, alternatively, see if I can moan my way sufficiently around the daft policy).

robmoss2k
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Re: Downloads page blank after server move

Post by robmoss2k » Tue Sep 04, 2012 3:25 pm

It seems that jDownloads has some cross-platform transfer issues - it writes some filenames directly into tables by the look of things which are absolute rather than relative, I don't know whether this is a nuance of this particular installation or a genuine bug, but I've just told them it will only work on Linux, installed an Ubuntu server, re-transferred everything, updated the couple of modules that throw PHP errors everywhere when running on a current version of PHP, and everything is working fine and dandy now.

So if you're using jDownloads and you try to move it from Linux to Windows and you get a blank page... this would probably be why.

Thanks for the help!

EDIT: I should also mention that I came across exactly the same problem with IIS. I didn't try with ZendServer.

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humvee
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Re: Downloads page blank after server move

Post by humvee » Tue Sep 04, 2012 3:48 pm

It may well be the way that PHP is configured rather than JDownloads that is the issue between the platforms as Joomla and extensions are OS platform independent.
EDIT
Not sure if at all relevant but there are some notices on the JDownloads site
Important:
  • the functionality is (nearly) the same as the last jD version for Joomla 1.5 - no new features
  • the source code is only changed for Joomla 2.5 and is not new coded (this comes later this year and is in work)
  • the new ACL (Access Control List) in Joomla 2.5 is not supported current. jD used again your own access groups system
  • the new multi language functionality in Joomla 2.5 is not supported current.
  • the support for JomComment and Joomfish is temporary removed until it exists versions for Joomla 2.5 from this addons
  • Alphauserpoint support is included and you can use the existing AUP Plugins from the Download Area. See also the FAQ.
  • the format for the: Date-Time format field in the configuration has changed from php strftime() format to date().
  • For installing the new release, use the Joomla Installer.Use the same way, when you will update your jD version to a newer release.

robmoss2k
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Re: Downloads page blank after server move

Post by robmoss2k » Tue Sep 04, 2012 3:51 pm

That's great to know - thanks!

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humvee
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Re: Downloads page blank after server move

Post by humvee » Tue Sep 04, 2012 3:56 pm

For the hell of it just installed JDownloads on WampServer 2.2.e with PHP 5.4.x and it installed straight away and there are no issues. Ok this is on Win7 Ultimate but would tend to support earlier comment that something else has happened along the way rather than OS specific.

EDIT

Just quickly looking through the Component as it is not one I have used before on the damaged site did you edit the JDownload Configuration and make sure that all paths are correct for the new location?

robmoss2k
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Re: Downloads page blank after server move

Post by robmoss2k » Tue Sep 04, 2012 4:27 pm

I didn't, but I know for a fact that the locations on the old Linux server and the new one that I've built are different. I've toasted the Windows server anyway now - I'm happier with the Linux one :-)


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