After upgrade to 5.3.0.12 website getting "Object reference not set to an instance of an object." error and can't logon.. Copied older version of website and used setup for version 5.3.0.8 to upgrade website only. That resolved the issue and allowed me back in lansweeper while keeping all the other service files 5.3.0.12.
also the 5.3.0.12 setup LSPush version is still 6.0.0.1 not 6.0.0.2 like the changelog states. Verified by doing clean install on other pc and capturing files and comparing versions.