AutoCAD 2007/2008/2009 DWG Format

[#1]

We have 2 network seats of Autocad 2010 & one standalone of 2009. All computers running on Windows XP. Upgraded the 2 seats of 2010 from 2008 last week. Saving dwg files as 2007.
Discovered on Friday that when the 2009 user opens files saved by 2010 as 2007 & tries to copy & paste, just gets "invalid." This happens either within the same dwg or into another dwg. If he starts a new dwg or uses a dwg that 2010 has not been used in, copy & paste works fine.
Other than upgrading the 2009 to 2010 (not an option at this time), any suggestions? Thank you.

[#2]

Read up on SAVEFIDELITY in help in 2010.

[#3]

If you are getting an "Invalid" message, try a purge and then try pasting again (no need to go back and copy to clipboard a second time) and see if it comes in. That works for me 100% of the time it happens...

[#4]

Savefidelity was originally set to 0, changed it to 1 & resaved dwg, 2009 still won't paste.

Also tried purging dwg & still 2009 won't paste.

Thanks for your suggestions anyway.

[#5]

I have also had this problem. I've tried "purge" and it works some of the times. Otherwise I have to save and exit AutoCAD and reopen it. It always works then. I tried doing a Wblock when the purge didn't work and it would not make the wblock at all. I don't believe any of our drawings have been opened as 2010. We only have 2009.

[#6]

...also experiencing this same problem. I'm also having trouble inserting blocks. I am not enjoying my 2009 software at all.

[#7]

I called my re-seller tech support about this. It's a compatability issue. If the drawing has been opened with 2010, they will need to export to autocad before someone with 2009 can open it. They said as long as you're moving files forward there should be no problems, autocad takes care of the change for you.

[#8]

I know this is an old thread, but I'm having this same problem in ACAD 2010. I'm saving as 2007 and when I PASTECLIP I get *invalid*. I don't have 2009 at all, only 2010, and I'm working in files that have never been opened in another version of CAD.

Frustrating...

[#9]

You may be pasting an AEC or 2010 object that's not allowed in 2007's format (reason you can do it in R2009 is it only has 2007 as a format).

Opening a file in 2010, regardless of your SAVE setting, will upgrade AEC content to a format not accessible in R2009 or lower. AECTOACAD command may fix all of your files.

[#10]

I have had a same problem.

In my perception it happanes while we try to copy object which is created by Other CAD softwares(Or custom made objects,such as hatch from Ravit). I delete costom made hatches before I copy with the base point. It worked for me.