Source: Adobe Support Knowledgebase
Issue:When you try to reopen an image larger than 2 GB in Adobe Photoshop CS2, you receive one of the following error messages:
– “Could not complete your request because of a disk error.”
– “Could not complete your request because the selected pattern is not available.”
– “Could not complete your request because an unexpected end-of-file was encountered.”
You saved your image file from Photoshop with no compression in the image file, or your image contains a layer style with a pattern or a pattern content layer.
Solution: Install the Photoshop CS2 9.0.1 update.
Download and install the update from the Adobe website at www.adobe.com/downloads .
Photoshop CS2 cannot open TIFF, PSB and PDF files larger than 2 GB if they were saved in Photoshop without compression or if they contain a pattern layer style or a pattern content layer. The 9.0.1 update allows you