unhandled exception c0000005(access violation reading 0x0000) at address 49cdeb7

[Anonymous]

i can not open cad files and it shows 

unhandled exception c0000005(access violation reading 0x0000) at address 49cdeb7

and then

internal error: attempt to register class 'AecbCompSpecLabelCurve' twice.

and i can not solution for that.

[Emmsleys]

Hi @Anonymous, 

Welcome to the AutoCAD LT community! 

I need more information from you to help. If possible please answer the following: 

• What AutoCAD release are you working in? 2014?2015?2016? 2017? 
• Are you running Windows 7, 8 , 10?
• Is this happening with all drawings even new ones? 

[Emmsleys · Accepted solution]

@Anonymous, 

Looked over your attachments. 

Lets have you try the following: 

• Run AutoCAD as the Administrator 
• Try logging in as a separate user on your system and start AutoCAD LT 2017 in that environment. Does the same error populate in that new windows user account?

Post back and let me know.

Thanks.  

[Anonymous]

it's autocad lt 2017 and windows 10.

I have no problem with previous drawings that I made with autocad 2007, even the ones that I worked on before but have Problem with bunch of new ones that autocad crashes in the opening of them.

The point is I could open them in other computer and worked on them but still have problem in my computer.

[pendean]

share one or more of these crashing DWG file here for us to try.

[Emmsleys]

HI @Anonymous, 

Following up on your post, were you able to try the suggestions posted? 

Post back with any updates on the unhanded error issue. 

Thanks.