jQuery Grid Plugin - jqGrid

I spent much time to try to make export to excel. I made same as /jqgridwiki/doku.php?id=wiki%3acustom_buttons and downloaded modules the same as described here:

/jqgridwiki/doku.php?id=wiki:import_methods

In order to use this module you should mark the Import/Export and XML/JSON utils when you download the grid.

I included these both modules (you can see selected modules here: ru.magicscreenshot.com/jpg/mRKpgs9hjk4.html and ru.magicscreenshot.com/jpg/dW4IxbEQK0Y.html )

Export to Excel button was not shown.

I tried, tried, tried....

In result button was shown after I select ALL modules. Seems, at least one more module is necessary

Please, fix it (maybe only documentation)

Thanks