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png file rotation

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A virtual file system that offers a feature-rich storage for application documents and data with built-in compression and encryption.
#25336
Posted: 06/18/2013 08:52:48
by Stanisław Jankowski (Priority Standard support level)
Joined: 12/06/2011
Posts: 20

Hello!

I wrote a file-system similiar to SFTP Net Drive but using different SFTP library.
I received ERROR_CAN_NOT_COMPLETE in System.Collections.ListDictionaryInternal when saving rotated .png file.

I am using Windows7 Pro x64 SP1.

The same error can be observed in SFTP Net Drive but does not exists in Mapper sample. I tested it with 3 different sftp (openssh) servers and arror can be reproduced with all of them.

Steps to reproduce:

1. Upload a .png file to sftp drive.
2. Click twice on it to open it in Windows Photo Viewer
3. Click rotate clockwise
4. press ctrl+s to save changes

Result: ERROR_CAN_NOT_COMPLETE occours.

Do you know the reason why such strange behaviour exists? I think it is not the CallbackFS nor sftp library fault. It is rather some complicated issue connected with SFTP communication nature.

Best regards,
Staszek Jankowski

P.S. .png files were made using Paint tool.
#25353
Posted: 06/19/2013 03:31:45
by Volodymyr Zinin (Team)

Moved to Helpdesk for further investigation.

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