What steps will reproduce the problem?
1. opening a saved file from my desktop folder
2.
3.

What is the expected output? What do you see instead?
an opened file, however i get error message saying "Ooops! Failed to load
contents from this file"

Caused by 'java.util.zip.ZipException': error in opening zip file

What version of the product are you using? On what operating system?
xmind 3 free version on windows xp

Please provide any additional information below.

really hope someone can help me access and save my xmind file, has so much
important brinstorming on it

kind regards
Daniel