7-zip error:Extracting META-INF/AIR/hash-Unsupported Method

i get this error when extracting an .air file of botanicula:

this is the only error when extracting with 7-Zip on Xubuntu 11.04

7-Zip 9.04 beta Copyright (c) 1999-2009 Igor Pavlov 2009-05-30
p7zip Version 9.04 (locale=de_DE.UTF-8,Utf16=on,HugeFiles=on,2 CPUs)
Processing archive: /media/H2SD/Botanicula.air
Extracting mimetype
Extracting META-INF/AIR/application.xml
Extracting META-INF/AIR/hash Unsupported Method
Extracting BotaniculaLinux.swf
Extracting data/01/1_01.swf
Extracting data/01/1_02.swf
Extracting data/01/1_03.swf
...

is this important?

does it mean, that the hash is not correct? if so, how can i stop the 7-zip gui from deleting all it has already extracted due to this unimportant error?

4

1 Answer

I think this whole issue is not important. I don't know a real reason, why I have to extract the Air file

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