I recently contacted Winhost support but was told to try and get a solution in the forums section. I have a website that has an administration section that uploads images, converts them to binary and stores the images in a database. All of a sudden (it started a couple months ago), I am unable to do this, getting the following error: /Administration/NaturePhotographPhotoAdd.aspx.cs btnSubmit_OnClick Parameter is not valid. System.Drawing at System.Drawing.Bitmap..ctor(String filename) at Photonormal.Administration.NaturePhotographPhotoAdd.btnSubmit_OnClick(Object sender, EventArgs e) in G:\Photonormal\Administration\NaturePhotographPhotoAdd.aspx.cs:line 68 7/1/2013 5:30:18 PM I have my trust level set to "Full" and the same code works locally on my own computer but when I try to do this on my site hosted by Winhost, I get the above mentioned error. Winhost states they reset my "ACL" permissions. Would anyone know something for me to check? I have a hard time believing it is code, as I cannot reproduce the error in DEBUG mode inside Visual Studio.