Rotator File Problem – unable to delete an image

Hi

I am really new to wordpress and the associated creation and management using HTML, CSS and the folders that help it run. I will tell you exactly what I did in case it is relevant. I use the Thesis theme.

I was experimenting with the Rotator File Images, substituting the default for my own and I named the sample ones so I know exactly what they are as I want to use some of them.

I noticed on the files arrange themselves alphabetically so renamed the photos I wanted to use A picture, B picture etc so they displayed in the order I want – not yet knowing if there is a better way to do this which I am sure I will find.

When I had begun I realised I should have resizied the images and saved them at a lower quality prior to uploading them in to the Rotator file for display on my website.

I went back to delete them and succeded with all but one, which for some reason I can not delete. I receive the following message when I right click and delete (on the image)

Failed. A file with that name may already exist, or you may have mis-typed the folder name.

I have also noticed if I try right click and open, this does not work it is just a white space with a red cross in the corner very similar to those e-mails where you have to right click to download image.

On the actual website the image is too large and is on every page single page and I can not seem to find a way of deleting it.

I have also notices that the Icon next to the image title is different to those of the default JPEGS. It is uncles bur green where as the icons next to the other titles are the standard JPEG icons.

I hope that makes sense, but please do bear in mind I have just started. If any one is able to supply a solution even if it reinstalling or similar please could you kindly explain in very basic terms and step by step.

I have searched the forum and learnt alot but I can not seem to find a solution to this.

I need to delete this photo or restore to its original state but without loosing what I have done so far – text content.

Thank you in advance

Best Wishes

Valerie