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FAQ > DiskCatalogMaker cannot open my catalog file.

(1) because of an unknown version error.

Please get the latest version of DiskCatalogMaker, and trash the old version if exists.

The catalog file format (.dcm) has been changed in DiskCatalogMaker 4.4. The new file format cannot be read with version 4.3 or earlier.

If you would like to save a catalog file as the old catalog file format, please remove all disk comments from the catalog.

(2) because of an error ID=-39.

It seems that your catalog has been damaged because of previous crash or modified by another application. Please use your backup copy.

(3) my catalog file looks like a plain white icon.

Please add the extension ".dcmf" to the end of the name of your catalog file.

See also:
What are .dcm and .dcmf?
What is .dcmd?