First run check crashes with old configuration

[jethrogb]

The latest update adds the configuration section [First run]. If you don't add this section manually, thinkdisp crashes when run on line 278 (if tmpUconf.perm_fixed not in "True"), because perm_fixed does not exist. I don't know python, but it sounds like a trivial fix to check if tmpUconf.perm_fixed exists before accessing it.

[sagark]

Thanks for the heads up, this should be fixed as of cec8d21.