AutoCAD hangs when opening particular dwg

[sactomacto]

A client has sent me files purported to be created by AutoCAD 2015, but my AutoCAD is unable to open them. Everytime I try, my AutoCAD becomes unresponsive and I have to ctrl-alt-del and end task. I have asked them to send me different versions and even dxf but the problem remains and I am out of ideas.

I have tried to insert the file as a block into a new drawing and it freezes also.  On a fun note, the files are able to open in Truview, but that is useless to me.

files attached.

help.

I have

AutoCAD 2015 full version

Windows 8.1

i7 core

8.00 GB ram

64-bit

[pendean]

You need to get some other dwg-compliant software to fix DWG files from foreign vendors, then you can open them in AutoCAD more easily. I used Draftsight to get into these and clean them up first.

[sactomacto]

f-plan_1.dwg works!

But f-plan_2.dwg still hangs up on my computer. Is there something going on with my computer or it's settings?  Can you do an AECTOACAD export on f-plan_2? Any other suggestions would be greatly appreciated. 

[pendean]

Both files open fine here in plain jane AutoCAD2015. There are no AEC/Proxy objects in these files.

Did you install SP2 for 2015? I did not, but other than that I'm not sure why your AutoCAD 2015 is hanging with the files I posted.

[braudpat]

Hello from France

Welcome to the Autodesk/AutoCAD Forums !

I have purged your DWGs and cleaned up (maybe a little bit too much) them (with special tools) and I haven't any problem with ACAD 2012/2014/2015 !

So please test ...

[sactomacto]

Yes I have SP2 installed for 2015.

So apparently something is wrong with my computer and/or autocad installation.

What is the best procedure to do a clean reinstall?

[sactomacto]

Thanks for trying from France.

Your versions (both) still don't work on my AutoCAD.  Apparently the next step is to uninstall SP2 or do a clean re-install of autoCAD...

[braudpat]

Hello

YES my 2015 is with SP1 and NOT with SP2 ! Because I am very careful ...

The SP2 for 2015 seems to generate some "strange side" bad effects !?

So Good Luck !

[sactomacto · Accepted solution]

As mentioned by a few others, the culprit was SP2.  I uninstalled SP2 and now the files open fine. Thank you for the suggestions.