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I have formatted the Acer Aspire 3000 HDD. Then tried to install Lubuntu 14.04. When installation is almost done, I get a warning saying that the Lubuntu installer is damaged and therefore installation can't be preformed.

What can I do? I am new at Linux-Ubuntu. Thanks

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How did you install Lubuntu, from USB or CD/DVD ? Did you check the MD5 sum of your downloaded iso? –  TuKsn May 26 '14 at 14:18

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