CutesieClaire

Hey I'm having a problem opening a PSD a friend has sent me. To be more clear, I have Photoshop CS6 Extended and a friend of mine was designing a project in Paint.net, they used the PSD filetype plugin to save as a PSD and send to me to complete my half of the project, but I was unable to open it in photoshop. I then downloaded Paint.net and this plug in but I keep getting "PhotoshopFile.PsdInvalidException: Unknown image compression method." rather than opening the file. Has anyone seen this before?