I am running OS X 10.11 El Capitan. For a while now I have not been able to open my old ClarisWorks documents. ( I think maybe since Appleworks 6 or so.) I have not thrown them out in case a solution would arise one day and thankfully I have found one. You can open old ClarisWorks document using Libre Office. It doesn’t seem to work on drawings, but it does work on word-processing documents.
I had varying degrees of success opening old ClarisWorks documents in Libre Office.
Clarisworks and Appleworks drawings would open but I could not see the drawings, I could only see the text that was in the drawings.
In word processing documents, all the information seemed to be there but the formatting was not great.
It’s not going to open your documents perfectly, but it might allow you to get some information out of your old files that Pages won’t open.
For example, trying to open an old AppleWorks document in Apple Pages gave me this error below but LibraOffice opened the file. The formatting was a bit poor but I could at least get the information out that I wanted.
Once you have opened the file in Libra Office you have two options. You can copy the information and paste it into a new Pages document. Or you can save the file (Using ‘Save As) to save the file as a Microsoft Word document, which you can then import into Apple Pages.
Libra Office does not allow you to save as a Pages document.