Weird problem with USB drive

[mystvearn]

I have a Apacer handysteno 1gb USB drive. The problem with the drive is when I double click the drive in my computer/exlporer, I get this message "Access Denied". But I can open the handy drive using the explorer folder window (on the left side of the window). I manage to fix it by formatting the usb drive, but what is the cause of the problem in the first place?

[glc]

Just a guess - you formatted it NTFS in a different computer and added files to it from that computer?

Don't format a flash drive NTFS - use FAT32.