Code error for our admin page, need fix

Hello, we currently have a website [login to view URL] our interest rates and data to update the site are entered on the following site [login to view URL] address. A few days ago we started receiving an error message: Access to the path 'D:\Hosting\6601793\html\[login to view URL]' is denied. Source File: d:\hosting\6601793\html\[login to view URL] Line: 59 You can visit the apge and see for yourself. This should be a quick fix. We are hosted with godaddy. We want this issue fixed today. Thanks.