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I want do add different files to a new zip file in the command line (batch file).
7z a -tzip -y D:/Test.zip D:\Temp\file1.txt
7z a -tzip -y D:/Test.zip D:\Temp\file2.txt
Until recently I've used 7-Zip v9.28 the batch file runs well.
After updating to v9.34 beta the add of the second file (and following files) terminates with Internal Error #20121118.
It doesn't like "D:/Test.zip"
Use "D:\Test.zip" instead.
I'll fix next version.
It seems not yet fixed in 7-Zip 9.38 beta / 2015-01-03 :-)
9.38 only fixes some bugs of 9.34 version.
Another (new) branch of code is under development still.