Not able to access my folder in Win Xp

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Hi i facing a small problem, i am using windows xp sp2 and windows vista ultimate edition, now the problem is that i have attached a external hard disk to my Win xp i was able to view and access all the files and folder and i used the same external HD with my vista i was able to view all folders and file.Now the problem arises when i used the external HD with another system with Windows XP sp2, when i tried to open the folder which i previously accessed using vista its throwing error "The file or directory is corrupted and unreadable" but actually the folder have data in it, this happen only with 2 folder but other folders are accessible.Can anyone help me with it.