Just updated the plugin and it gives me an error message for a custom post type page that does not use any custo mtaxonmy nor taxonomy:
Warning: array_combine() [<a href='function.array-combine'>function.array-combine</a>]: Both parameters should have at least 1 element in C:\wamp\www\...\plugins\taxonomy-taxi\taxo-taxi.php on line 231
Warning: array_merge() [<a href='function.array-merge'>function.array-merge</a>]: Argument #2 is not an array in C:\wamp\www\...\plugins\taxonomy-taxi\taxo-taxi.php on line 233
Warning: Invalid argument supplied for foreach() in C:\wamp\www\...\wp-admin\includes\class-wp-list-table.php on line 610
Custom post types with custom taxonomies are fine.
No problem with the custom post type declaration, both are the same.
back to .57 fixes the bug but doesn’t allow the alphabetical sorting option, which is pretty neat.