Drawings causing Xref's to get corrupt

[lawreyj20]

We have been having a lot of problems with our CAD files getting corrupt as of late. We are using 2012.

Basically we have an overall dwg which has several projects xref'd into it. Then we are xrefing the overall into what ever project we are working on. We will be working on our plan sheets and have a fatal error which is then causing all xref's to become corrupt. Any help on this would be greatly appreciated.

Jeff

[dgordon]

are you running windows 8 operating system?

[lawreyj20]

Windows 7, 64 bit, all services packs are up to date.

[Jay_B]

Have you tried audit and recover, including on each associated/attched xref?

Often times the trouble may be lurking in an xref.

[lawreyj20]

Yeah.

I have audited, purged.

However if I do a recover now it wants to through everything on audit bad layer.

[Jay_B]

"Basically we have an overall dwg which has several projects xref'd into it"

Can you elaborate on your workflow?

What is meant by several projects?

[lawreyj20]

Basically we have different phases of the project xref'd that make up the overall base. We need to see some of the future information and previous phase information in our projects. I have never run into this kind of problem before so I'm trying to understand if I need to change the way I'm thinking these xref's should opperate.

[Jay_B]

If I were in your situation I would detach the xref's 1 at a time, re-open the file and try to find a pattern or at least see if it's the parent drawing or which file is causing the fatal error.

Without seeing the files it's anyone's guess what may be happening.

[lawreyj20]

I'll give it a shot Jay.

Thank you for your help.

[Joe-Bouza]

I'll bet a spit to a snot there is a nested xref causing a circular problem.

[troma]

Well that just sounds unhygienic.

[dulin75]

Have you found an answer to the problem.?

We also have the same issue of corruption in our xref files. I have been able to narrow it down to when a view port is rescaled. It appears that autocad is trying to resize all the annotative objects in the current drawing and xref files to match the current view port scale. This is somehow corrupting the xref files to a point where we have to rename the backup file as soon as we notice the change so it can be recovered without any other issues. If we manage to catch it right a way we can get the xref fixed but if we don't notice it for a couple of days we have to pull backups to get the reference file back.

Our xrefs are attached as overlays and all demand loading is turned off.  The interesting thing is, this problem is not consistent from machine to machine. We only have the problem with one designer's machine at the moment but we have noticed it on others from time to time.

[troma]

That rings a bell for me.
I was switching some viewports' scales here, and the x-reffed drawing became corrupt. Probably about a year ago now, and was in C3D 2011.

I found if I turned off the viewport I could do whatever I wanted to the scale, turn them on again, and no problems. If they were left on while I did it, the x-reffed drawing corrupted.

[gbondoc]

C3D 2012, win 7 64, 

Same issue here as @troma. x-refs get corrupt. Doesn't happen all the time and very hard to replecate. Been seeing it for over a year now. Adding anno scales to base reference drawings seemed to lessen the file corruption. Moving to 2014, hope this goes away. 

[ceethreedee.com]

Wild stab here

in any of the directories you are working in Jeff is there an "acad.lsp" file?

Kapanther

[CilleH]

I was running AutoCAD 2015, full licensed version.

At the end of a very long, large project, all of a sudden, I cannot save my electrical x-ref!  

This is what comes up.....

Unable to save drawing______________.dwg

Drawing saved to ____________\save8920.tmp

WT?

I can save my x-ref as something else, but the file I need is completely gone.

I dont need this at the end of a huge project.

My tech guy even downloaded AutoCAD 2017 for me....guess what...does the same thing!

I have 21 years AutoCAD experience, not that I am a newbie!

Any suggestions?

Thanks in advance

[CilleH]

I didn't rescale the viewport, once I set it up...thats it, no change. I am the only one that works on it.

Thank you for the suggestion tho. It hasn't happened again as I recreated the x-ref and gave it a different name and remapped all drawings referencing it. If I try to go back to old name it will do the same thing.

This one has me stumped.

[CilleH]

nothing nested in my x-ref causing a circular.

Thanks for the suggestion