FLASH PRO error opening file

Hi,

A client of mine has an issue when opening a file with FLASH PRO.

The file has a .fla extension.

Its name is : MK126_C020_B_PAISLEY_KANGAROO.fla

It's saved on a server on the network.

Here is the issue he described to me :

"When i close and open again the same file, my savings are lost and it opens with a few minutes back from where i stopped. Even when saving and incrementing the files many time it still happens. It only doesnt work with the builds"

"It opens with an anterior version and even makes my copy-paste from an other file going backwards"

I tried to make him change the file name and check the extension but nothing seems to change.

Any help is appreciated since it is stopping us in our production.

Thanks,

Cedric