I just recognized a strange behavior after a standard gii setup of webapp, controller, model and crud. Setup was done without errors, but checking the site, especially the manage and show operations, I received the following exception:
Description The column must be specified in the format of "Name:Type:Label", where "Type" and "Label" are optional. Source File /volume1/web/yii/framework/zii/widgets/grid/CGridView.php(288)
Tracing down the problem I found that a special character - in my case the ß / & - used in a column name in the mysql db was the cause. Replacing it with 'ss' in the db and re-running the gii scripts solved it.
If it was not just my stupidity and you can confirm this bug, please move this post to the bug reports.