An update of package com.woltlab.wcf from version 2.1.0 RC 2 to 2.1.0 RC 2 is not supported.
Stacktrace:
#0
/var/customers/webs/customer/wcf/lib/system/package/PackageInstallationScheduler.class.php(518):
wcf\system\package\PackageInstallationScheduler->findShortestUpdateThread('com.woltlab.wcf',
Array, '2.1.0 RC 2', '2.1.0 RC 2')
#1
/var/customers/webs/customer/wcf/lib/system/package/PackageInstallationScheduler.class.php(196):
wcf\system\package\PackageInstallationScheduler->updatePackage(1,
'2.1.0')
#2
/var/customers/webs/customer/wcf/lib/system/package/PackageInstallationScheduler.class.php(525):
wcf\system\package\PackageInstallationScheduler->resolveRequirements('3068')
#3
/var/customers/webs/customer/wcf/lib/system/package/PackageInstallationScheduler.class.php(106):
wcf\system\package\PackageInstallationScheduler->updatePackage('12',
'5.1.0')
#4
/var/customers/webs/customer/wcf/lib/system/package/PackageInstallationScheduler.class.php(67):
wcf\system\package\PackageInstallationScheduler->tryToInstallPackage('com.viecode.lex...',
'5.1.0', true, false)
#5
/var/customers/webs/customer/wcf/lib/data/package/update/PackageUpdateAction.class.php(497):
wcf\system\package\PackageInstallationScheduler->buildPackageInstallationStack(false)
#6
/var/customers/webs/customer/wcf/lib/data/package/update/PackageUpdateAction.class.php(449):
wcf\data\package\update\PackageUpdateAction->createQueue('update')
#7 [internal function]: wcf\data\package\update\PackageUpdateAction->prepareUpdate()
#8 /var/customers/webs/customer/wcf/lib/data/AbstractDatabaseObjectAction.class.php(196): call_user_func(Array)
#9 /var/customers/webs/customer/wcf/lib/action/AJAXProxyAction.class.php(77):
wcf\data\AbstractDatabaseObjectAction->executeAction()
#10 /var/customers/webs/customer/wcf/lib/action/AJAXInvokeAction.class.php(96): wcf\action\AJAXProxyAction->invoke()
#11 /var/customers/webs/customer/wcf/lib/action/AbstractAction.class.php(49): wcf\action\AJAXInvokeAction->execute()
#12 /var/customers/webs/customer/wcf/lib/action/AJAXInvokeAction.class.php(63): wcf\action\AbstractAction->__run()
#13 /var/customers/webs/customer/wcf/lib/system/request/Request.class.php(58): wcf\action\AJAXInvokeAction->__run()
#14 /var/customers/webs/customer/wcf/lib/system/request/RequestHandler.class.php(139): wcf\system\request\Request->execute()
#15 /var/customers/webs/customer/acp/index.php(10): wcf\system\request\RequestHandler->handle('wbb', true)
#16 {main}