Pressing that button, gives me a fatal error.
Screenshot: https://www.awesomescreenshot.com/image/4870159/df1405a0e44eb5d41dbbc3b76af0fa90
version: 3.8.2
I just tested that on VM 3.8.2 10325
All OK:
Message
com_virtuemart_allinoneInstallerScript:: VirtueMart update #__virtuemart_payment_plg_standard
com_virtuemart_allinoneInstallerScript:: VirtueMart update #__virtuemart_shipment_plg_weight_countries
Database updated
Not sure how VM is implemented in your system.
In my case there was no folder named: "klarna" under the vmpayment plugins.
Though there was one named "klarnacheckout"
Seems like the "klarna" directory, was created after the manual update of 3.8.2