Crash During Startup

Description

All configuration objects (experiments, grammars, machines) may be constructed by tcl init scripts. When a tcl-error occurs in one of those scripts (e.g. a typo), the application terminates giving you an uggly tcl stack-trace on the tty if there's any. If you've got a tcl-error in an init script and you started yada from somewhere else but from the shell you will observe the splash screen for a short time which then vanishes suddenly. Getting the uggly but usefull tcl stack-trace in order to get your tcl init scripts straight is difficult (read some ~/.xsession-errors file with lots of other dump messages in it).

So the requested feature ist: just embed the init script evaluation in a "catch" block and notify the user of caught errors with a nice message box about the errors.

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