Error opening PSD files

I have a problem opening some PSD files in Photoshop 8.0, it gives me the following error

message: "Couldn't complete your request because the layer is not a valid text layer"

Anybody can offer me how to open .psd files?

Thank you

 

Alternative solution:

> Open "My Computer" from your desktop. Double-click your hard drive.

> Open "Documents and Settings."

> Open the folder labeled with your user name.

> Open "Local Settings" followed by "Temp."

> Scroll down to the files beginning with "Photoshop" ("PS" for older Photoshop CS builds). This will be followed by a series of letters and numbers.

> Double-click each "Photoshop" ("PS") temp file to open them in Photoshop CS. This is the only way to identify which temp file contains the project you wish to recover. Luckily, because when Photoshop shuts properly it deletes its temp files, there should be no more than three or four.

> Select "Save As" from the "File" menu when you find the temp file you want. This will make the file permanent.

In case of unsuccessful these steps, third party solution Photoshop Repair Toolbox

It is available here: http://www.photoshop.repairtoolbox.com/

 

There is no doubt, your file is corrupted. The error

message: "Couldn't complete your request because the layer is not a valid text layer" indicates on it. Have you downloaded this file from net?