If you get an error, such as:
Cannot import large xar. Error "java.util.zip.ZipException: error in opening zip file"
Then you should use one of the following solutions:
- Turn on filesystem attachment storage
- Use the Large XAR import extension
- Use the Filter Stream Converter Application to read in the file as a "xwiki+xar" and convert it into the format "xwiki+instance" (which stored the data in the wiki)
