Does a /updates/[version]_updater folder indicate an update problem?

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Hi,

A while ago I upgraded to 5.6.1.2. The installation never returned with a "Success" message but worked. The site seems to be working fine and reports its version as 5.6.1.2.

Now I noticed that the /updates folder contains two entries:
concrete5.5.2.1
concrete5.6.1.2_updater

config.php points to the second: <?php define('DIRNAME_APP_UPDATED', 'concrete5.6.1.2_updater');?>

However, reading through the forums it seems that the naming convention used for the second one is inconsistent. I am wondering if that indicates an unfinished update.

If so, how can I ascertain that the update is correct and correct it if needed?

Thanks,

Thomas