[QUOTE="jbanaszczyk, post: 37777, member: 5338"
Maybe the reason is: TCMD was not installed, just extracted and executed.
Maybe should I perform some regsrv ?[/QUOTE]
That cannot work. We don't support installing TCMD in any way other than using the installer.
The installer does a lot of other work -- creating the updater script (which is what's failing for you), registering com dll's, setting/updating a number of registry keys, configuring the firewall, creating the uninstall script, etc. Skipping all of that will at best result in a crippled TCMD that is missing many features.