What? I have found some levels corrupted that I found
j2o. So I can not play with the levels corrupted.

these are:
Mt Helens (http://www.jazz2online.com/downloads/5384/-/)
Xyzzy (http://www.jazz2online.com/downloads/5704/-/)
Underworld (http://www.jazz2online.com/downloads/5707/-/)
Music of Barrel of Monkeys (http://www.jazz2online.com/downloads/76/-/)
Unfound area (http://www.jazz2online.com/downloads/7104/-/)
Some Treeish Level (http://www.jazz2online.com/downloads/4286/-/)
Avoidance lvl pack (http://www.jazz2online.com/downloads/3656/-/)
Wicked wood (http://www.jazz2online.com/downloads/6213/-/)
Stronghold (http://www.jazz2online.com/downloads/7240/-/)
Tigris Caves (http://www.jazz2online.com/downloads/3609/-/)
Trouble Ahead (http://www.jazz2online.com/downloads/4477/-/)
Unknown Garden (http://www.jazz2online.com/downloads/4748/-/)
Stone Age (http://www.jazz2online.com/downloads/6889/-/)

These files need to be repaired, as we do?

Btw: If I play JJ2 in a level With 0.00 kb ,The game will crash

Sorry, I Edit this post because My English is bad And i forgotten more corrupt levels (are important)