I have back up. But I would have to do everything from scratch then.

Support ticket was answered. I was told to use the backup.

Luckily, replacing the files through FTP brought the forum back.

No, I didn't do anything with that. It must have remained intact for 4.1 to work.

I just re tried the update. Stuck with a new error message now

Quote

Fatal error: Can't overwrite unknown tables 'wcf1_page', 'wcf1_page_content'

Information:

id: 8dd1ad7a020e9e10337127985e62ad5c6c42657d

error message: Can't overwrite unknown tables 'wcf1_page', 'wcf1_page_content'

error code: 0

file: /home/appedltm/public_html/appen.pw/wcf/lib/system/package/plugin/SQLPackageInstallationPlugin.class.php (74)

php version: 5.6.30

wcf version: 2.1.12 (Typhoon)

date: Mon, 06 Feb 2017 21:10:38 +0000

request: /acp/index.php?install-package/&t=d351e527cdbd96ffcd609785ac5c283a0a9d88a2&s=274770c8f1f7b5315af46f39077373108d847c4c

referer: http://appen.pw/acp/index.php?…77373108d847c4c

Stacktrace:

Code

#0 /home/appedltm/public_html/appen.pw/wcf/lib/system/package/plugin/AbstractPackageInstallationPlugin.class.php(72): wcf\system\package\plugin\SQLPackageInstallationPlugin->install()
#1 /home/appedltm/public_html/appen.pw/wcf/lib/system/package/PackageInstallationDispatcher.class.php(571): wcf\system\package\plugin\AbstractPackageInstallationPlugin->update()
#2 /home/appedltm/public_html/appen.pw/wcf/lib/system/package/PackageInstallationDispatcher.class.php(139): wcf\system\package\PackageInstallationDispatcher->executePIP(Array)
#3 /home/appedltm/public_html/appen.pw/wcf/lib/acp/action/InstallPackageAction.class.php(73): wcf\system\package\PackageInstallationDispatcher->install('1f8d76f2')
#4 /home/appedltm/public_html/appen.pw/wcf/lib/action/AbstractDialogAction.class.php(70): wcf\acp\action\InstallPackageAction->stepInstall()
#5 /home/appedltm/public_html/appen.pw/wcf/lib/action/AbstractAction.class.php(49): wcf\action\AbstractDialogAction->execute()
#6 /home/appedltm/public_html/appen.pw/wcf/lib/system/request/Request.class.php(58): wcf\action\AbstractAction->__run()
#7 /home/appedltm/public_html/appen.pw/wcf/lib/system/request/RequestHandler.class.php(139): wcf\system\request\Request->execute()
#8 /home/appedltm/public_html/appen.pw/acp/index.php(10): wcf\system\request\RequestHandler->handle('wbb', true)
#9 {main}

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Are you suggesting that DB got corrupted / modified as well ?

I installed a fresh 5.0 and imported data. Everything appeared fine. Just when all looked good, I removed the default forum and category that came with fresh 5.0 installation. It took me to a new error

Quote

An error has occured

Internal error code: 81dbb3b048d55f6c9553b70c74c7ed7db68d6d98

What happened?

An error has occured while trying to handle your request and execution has been terminated. Please forward the above error code to the site administrator.

The error code can be used by an administrator to lookup the full error message in the Administration Control Panel via “Logs » Errors”. In addition the error has been written to the log file located at */log/2017-02-07.txt and can be accessed with a FTP program or similar.

Notice: The error code was randomly generated and has no use beyond looking up the full message.

System Information

• PHP Version:

  5.6.30

• WoltLab Suite Core:

  3.0.1 pl 1

• Peak Memory Usage:

  0.959/640 MiB

• Request URI:

  /

• Referrer:

  http://appen.pw/core/index.php?members-list/

• User Agent:

  Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/55.0.2883.87 Chrome/55.0.2883.87 Safari/537.36

Final Error

• Error Type:

  wcf\system\database\exception\DatabaseException

• Error Message:

  Connecting to MySQL server 'localhost' failed

• Error Code:

  2002

• File:

  */lib/system/database/MySQLDatabase.class.php (46)

• Stack Trace:

  • #0 */lib/system/database/Database.class.php (111):
  • wcf\system\database\MySQLDatabase->connect()
  • #1 */lib/system/WCF.class.php (305):
  • wcf\system\database\Database->__construct('[redacted]', '[redacted]', '[redacted]', '[redacted]', '[redacted]')
  • #2 */lib/system/WCF.class.php (147):
  • wcf\system\WCF->initDB()
  • #3 */global.php (13):
  • wcf\system\WCF->__construct()
  • #4 */../global.php (13):
  • require_once('*/global.php')
  • #5 */../index.php (8):
  • require_once('*/../global.php')

Original Error

• Error Type:

  PDOException

• Error Message:

  SQLSTATE[HY000] [2002] Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

• Error Code:

  2002

• File:

  */lib/system/database/MySQLDatabase.class.php (42)

• Stack Trace:

  • #0 */lib/system/database/MySQLDatabase.class.php (42):
  • PDO->__construct('[redacted]', '[redacted]', '[redacted]', '[redacted]')
  • #1 */lib/system/database/Database.class.php (111):
  • wcf\system\database\MySQLDatabase->connect()
  • #2 */lib/system/WCF.class.php (305):
  • wcf\system\database\Database->__construct('[redacted]', '[redacted]', '[redacted]', '[redacted]', '[redacted]')
  • #3 */lib/system/WCF.class.php (147):
  • wcf\system\WCF->initDB()
  • #4 */global.php (13):
  • wcf\system\WCF->__construct()
  • #5 */../global.php (13):
  • require_once('*/global.php')
  • #6 */../index.php (8):
  • require_once('*/../global.php')

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It was a host related issue. All good now.

MySQL error

It was due to hosting provider problems. They solved it.

Quote from Dilip

It was a host related issue. All good now.