Access violation at address 01504207 in module 'SBD.exe'. Read of address 00000000

[michael.maksour]

I keep receiving this error when I click on the "structure loads" tab.

Once the error pops up, I cannot proceed using the program.

Does anyone know how to rectify this issue?

I am using version 20.2.140.0.

[leowarren34]

Hi @michael.maksour,

What GPU are you running?

This article directly pertains to Structural Bridge Analysis so is probably a good start: https://knowledge.autodesk.com/support/structural-bridge-design/troubleshooting/caas/sfdcarticles/sf... 

[simon_hooper]

Hi Michael

Does this error occur with a particular file?  If so please zip and attach so that we can investigate.

Thanks

Simon

[michael.maksour]

Hi Simon,

See attached.

[simon_hooper]

Hi Michael

Thanks for the file.  The problem seems to be in the definition of the longitudinal beams....I will see if I can repair.

[simon_hooper]

Here is a version with the longitudinal beams cleared out.  I no longer get the AV.  You probably don't need to redefine the longitudinal beams in this non-standard grillage.

[simon_hooper]

I attach the details of the original longitudinal beam elements in case needed (with the data in error removed)

[simon_hooper · Accepted solution]

We have put in a fix to soon to be released version to stop the AV.  Note that there was reference to a zero length member (which doesn't seem to exist)...

zero-length-member.png

Thanks

Simon

[michael.maksour]

Many thanks Simon. You have saved me lots of trouble.