Do not open INDD catalog format. The program says " can not open the file. Perhaps inDesing does not support the file format , no external module that supports this format , or the file is open in another program . How do I restore a document?
99.999 percent of the time this message means either there is a lock file (.idlk) in the folder with the .indd file or the .indd file is not really a .indd and someone renamed some other format in the mistaken belief that it would allow InDesign to open an unsupported format like PDF.