>>>Ed,
>>>I created a FLL for SHFileOperation. Though it generally succeeds, rarely it returns 'Cannot read from device' (1026?) error under XP (and .NET Release version installed). Retrying succeeds if done with a short delay. In many trials I couldn't make it to work consistently. Directly using CopyFile,MoveFile etc API it never fails (provided same access rights etc). It was working w/o failure under w2k and w9x (no .NET).
>>>I'll try to send the source to you hoping you can catch something I missed :)
>>>Best regards
>>
>>Cetin,
>>
>>The function is supported by Shell32 4.0 and later. I've got a feeling (and it's just that) that it may be because of additional files needed to support the localized version of Windows (read Unicode).
>
>George,
>I use the same localization info fo both w2k and xp. I have at least Shell32 4.0 in both. It was working under w2k, since upgraded to xp it fails intermittently. It works if you have a 'brief' pause before a second try.

Cetin,

SWAG here. Have you tried adding a call to Sleep() prior to the first call? If I had to hazard a guess, it sounds like some sort of timing problem.