error code 131

[rodrigo_fariasZZEDN]

Im trying to open .slm files in Netfabb.

.slm file from Magics software opens with no problems, showing all slices.

But when I use a .slm from Ansys Additive Prep, this error appears:

"System error (OS code 131):
An attempt was made to move the file pointer before the beginning of the file."

Didnt find anything on the web.

Thanks.

[steffen_anders_adsk]

Hello, @rodrigo_fariasZZEDN,

Welcome to the Netfabb forum!

That would suggest that the SLM written by ANSYS is either formally incorrect or is formally correct in a way that Netfabb's import is incapable of interpreting correctly and that what Magics writes hasn't been hitting so far for you.

Either way, without example files this would be difficult to investigate, so, I can only recommend to provide some, ideally generated from the same input data but with different software each.

In the meantime I can only suggest to try different export formats or export format settings from ANSYS that don't happen to trigger the issue.

Kind regards,

Steffen

[rodrigo_fariasZZEDN]

Hello Steffen.

Thanks for the reply. Here is attached a small example, since I cant share my original geometries.

Its a small cube of 10mm side, sliced with default settings from Ansys Prep 2025R1. It generates this same warning in Netfabb if I try to load the .slm file.

In the meantime, I will try to provide a similar one from Magics.

Regards.

[steffen_anders_adsk]

Hello,

Thank you for your files, they are on their way to investigation.

Best regards,

Steffen