If I move this plugin in rubbish bin the InDesign starts with error messages but don't freeze. If I put Text plugin from another Mac to the plugins folder it freeze too. This error is not user dependent. Any ideas? Thanks
Now I can answer by myself. The reason is the SING.InDesignPlugin in the Text - folder. If I move this plugin to rubbish nothing freezes any more. I don't have any idea what that plugin does but I leave it in rubbish an InDesign works!