View display error

I am new to Drupal by just over a week now and I just did the update to 7.2 that was released yesterday.

Upon doing the update I realised I had all my modules in the core modules folder - so I moved them to sites/all/modules (doing them one by one, but did Views and CTools as well as Feeds at the same time as they all depend on CTools)

I deleted the cache and all seemed fine.

Except for my showcase view block I get this error:

Notice: Undefined index: showcase-block in template_preprocess_views_slideshow() (line 19 of ..sites/all/modules/views_slideshow/theme/views_slideshow.theme.inc).

I deleted this view and recreated it and emptied cache again. But I do not know how to fix this error.

I eagerly look forward to hearing from you.