Update to 0.2.5

[Vascom]

Hi guys,

During update from 0.2.4 to 0.2.5 I've got this error:

Fatal error: Uncaught exception Exception with message Query error: Can't DROP 'pid'; check that column/key exists (ALTER TABLE `tl_iso_config` DROP INDEX `pid` thrown in /var/www/vhosts/x/subdomains/isotope/httpdocs/system/libraries/Database.php on line 642

#0 /x/httpdocs/system/libraries/Database.php(189): Database_Statement->query('ALTER TABLE `tl...')
#1 /x/httpdocs/system/modules/rep_client/RepositoryManager.php(424): Database->query('ALTER TABLE `tl...')
#2 /x/httpdocs/system/modules/rep_client/RepositoryBackendModule.php(151): RepositoryManager->update('database')
#3 /x/httpdocs/system/modules/backend/BackendModule.php(116): RepositoryBackendModule->compile()
#4 /x/subdomains/isotope/httpdocs/system/modules/rep_client/RepositoryBackendModule.php(88): BackendModule->generate()
#5 /x/httpdocs/system/modules/rep_client/RepositoryManager.php(71): RepositoryBackendModule->generate()
#6 /x/subdomains/isotope/httpdocs/system/modules/backend/Backend.php(186): RepositoryManager->generate()
#7 /x/httpdocs/contao/main.php(101): Backend->getBackendModule('repository_mana...')
#8 /x/httpdocs/contao/main.php(304): Main->run()
#9 {main}

[Vascom]

Ok, now I've done it three times. Everytime the error was there I clicked the back button of my browser. The error is gone and the update is done! :?