Error message: "Unexpected File Format" 1

[cadman64]

Can anyone help me, another engineer and myself are working on a project together and he stayed last night to work on the models and when I came in this morning to open the file, I got a message saying "Undexpected File Format". These files will not open and I know they're not backed up. Are these files toast or is there a way to save them?

Thanks!

 

[SincoTC]

Check this link out, it may help:

http://www.eng-tips.com/viewthread.cfm?qid=161060

Trevor Clarke. (R & D) Scientific Instruments.Somerset. UK

SW2007x64 SP3.0 Pentium P4 3.6Ghz, 4Gb Ram ATI FireGL V7100 Driver: 8.323.0.0
SW2007x32 SP4.0 Pentium P4 3.6Ghz, 2Gb Ram NVIDIA Quadro FX 500 Driver: 6.14.10.7756

 

[cadman64]

Thanks Trevor!