Inventor Fusion

[#1]

I dont know why but the last two times I saved and exited out Inventor Fusion, when I come back to open and continue working, my file wont open and is corrupted. I dont know whats going on, I redid the work the 1st time, dont feel like doing it over a second time. How can I load my file if its over the 1.5MB limit even zipped? Any help?

Here is a link to the file:

http://forums.augi.com/showthread.php?146202-Help-my-file-was-corrupted-after-Save-and-Exit-not-sure...

[#2]

Here is the file as STEP. Can you help describe what you were doing just prior to the coruption?

There is a also a recover command in Fusion on Windows where you can somtime recover a file that has propblems.

[#3]

Thank You for recovering my file. I restarted this project and got some further but it happened again. This is getting kinda ridiculous. It seems to happen atleast once a week. (I have been saving individual parts seperately though) Im not sure if its something Im doing thats causing it, not sure. But Im afraid of closing Inventor, I might not see my file again lol. Would working in .STL be any better than .DWG? I see it has a step text file with it, does any of this relate to my problem? Haven't worked with .STL before.