You will get more information about the problem in our knowledge base:
http://www.woltlab.com/help/?code=13020
Information:
error message: Illegal statement 'DROP TABLE IF EXISTS wcf1_counter'. Wrong package ID '103'. Expected ID: '124'
php version: 5.2.6-1+lenny4
wcf version: 1.1.1 pl 2 (Tempest)
file: /www/xxxxxxxxxxx.com/newforum/wcf/lib/acp/package/plugin/SqlPackageInstallationPlugin.class.php (322)
error code: 13020
date: 01/16/2010 01:15pm
request: /newforum/acp/index.php?page=Package&step=SqlPackageInstallationPlugin&queueID=202&action=update&packageID=48&
referer: http://www.xxxxxxxxxx.com/newforum/acp/i…e&packageID=48&
Stacktrace:
#0 /www/spassbahner.com/newforum/wcf/lib/acp/package/plugin/SqlPackageInstallationPlugin.class.php(227): SqlPackageInstallationPlugin->checkDropTables('103', 'update')
#1 /www/spassbahner.com/newforum/wcf/lib/acp/package/plugin/SqlPackageInstallationPlugin.class.php(85): SqlPackageInstallationPlugin->checkSQL('103', 'update')
#2 /www/spassbahner.com/newforum/wcf/lib/acp/package/plugin/AbstractPackageInstallationPlugin.class.php(86): SqlPackageInstallationPlugin->install()
#3 /www/spassbahner.com/newforum/wcf/lib/acp/package/PackageInstallationQueue.class.php(146): AbstractPackageInstallationPlugin->update()
#4 /www/spassbahner.com/newforum/wcf/lib/acp/package/PackageInstallation.class.php(32

: PackageInstallationQueue->executePackageInstallationPlugin('SqlPackageInsta...')
#5 /www/spassbahner.com/newforum/wcf/lib/acp/package/PackageInstallation.class.php(52): PackageInstallation->install()
#6 /www/spassbahner.com/newforum/wcf/lib/acp/page/PackagePage.class.php(49): PackageInstallation->__construct(202)
#7 /www/spassbahner.com/newforum/wcf/lib/page/AbstractPage.class.php(46): PackagePage->show()
#8 /www/spassbahner.com/newforum/wcf/lib/util/RequestHandler.class.php(64): AbstractPage->__construct()
#9 /www/spassbahner.com/newforum/wcf/lib/util/RequestHandler.class.php(92): RequestHandler->__construct('Package', Array, 'page')
#10 /www/spassbahner.com/newforum/acp/index.php(

: RequestHandler::handle(Array)
#11 {main}
Click the button below to abort the update and return to the ACP.