Oh no, I found the error: It is sitting right in front of the monitor! I played Wurm a long time ago and I didn't remember that I have to open a console window and type these command there!
Bdew, many thanks for your help!
When I type act_show on or timelock 12 nothing happens. It's just displayed as if I say something. If I enter it as a command /act_show on it says unknown command.
Oddly I can't neither get Custom Actions nor Time Lock get to work with Ago's Client Mod Loader. Improved Toolbelt as well as Better compass work fine.
I can't find why the other ones don't work.
Has anybody an idea or the same problem?