Mini Front Page thumbnails images problem

I have problem with mini fornt page module on joomla 2.5 , there is no thumbnails images , i have 50+ articles and none of thumbnails shows in mini front page just text.
I check and there is no images with blank space like image%1.jpg just image-1.jpg or like that.
I try change Thumbnail Image size and a lot of things but its the same, there is no thumbnails.

Do you have any suggestions for resolving problem ?
Thanks

I figure out the problem but not solution, there is problem with redim image resizer, when i put image in artical and leave the original size its shows thumb in mini front page, but when i rezise it ( i must do that ) mini front page not show thumb.
Any solution how to fix that ?

Okey, i find solution if somebody have same problem, in image resizer plugin set to save images to images/yourfolder, default is set to cache/...