opening drawing in civil 3d that was created in map 2008

[bobkrissy]

I am going crazy.  I recently upgraded from map 2008 to civil 3d 2010.  Whenever I open a drawing that was last saved/used in my map 2008 program, it freezes upon opening and tells me there are errors.  If I ignore the problem, I can continue to open and work on drawing, but every time I open it up, I get the errors and the freeze.  Is there something I can do in civil 3d 2010 that will bypass whatever is freezing it up?  I have included a drawing that is freezing up in civil 3d 2009 and/or 2010 that was created with map 08

[entropist]

Have you tried running Recover on the effected files?

I just did a quick test with the file you uploaded, and after a recover operation the file opened with no errors.

[Jeff_M]

Yep, Recover, Save, works for me, too.

[bobkrissy]

Why do I have to recover each and every drawing though?  Any clues?  Also, with some drawings that works, others it does not.  I am looking for to upload one now where it continually shows errors even after recover.  thanks in advance for all your help.  Very much appreciated.

[Jeff_M]

At one time it was recommended to always use Recover when bringing drawings forward. In newer (C3D2012+ in my experience) it hasn't been needed near as much.