Space symbol in command Name leads to exception when command is repeated

[Former user]

If command Name contains space symbol then it runs successfully from commands menu (toolbar on the left side), but it's repeat (by pressing Up keyboard button) leads to CommandDoesNotExistException: Command @Delete does not exist.

It is better to add command Name syntax check during application startup and display error message if it is incorrect.

Also you should probably add DisplayName values to all command's definitions so user who used copy of default command file to create his own can be able to see that command Name is not the displayed value.

[Evgeny Kralko]

DisplayName property added to all commands