Okay. Removed all unnessesary lazarus installations. Even Lazarus 2.0.10. Downloaded and installed the 2.0.10 version of Windows. Installed the docked packages, removed the generics by @pascaldragon comments and installed sparta dockform.
Now everything is working. And also de IDE tells it's version 2.0.10 and not 2.1.0.
Thanks to all.