SigmaStudio "Error reading graph"

Hello VFO,

I am looking into this. Thanks for uploading the project.

Dave T

Hello VFO,

Our software person found that the Holters Filters were causing the issue. He deleted them from the project. Save a backup copy and reinsert the filters and see if the issue returns. Let me know.

I attached the file with the filters removed. So you have most of your work restored.

Dave T

adau1761_ADI_Fix.zip

Thank you Dave. All OK, redraw filter much easier then do all from start.

I found when problem appears. I made simple test project. When we use High Order Shelving Optimized Filter as single instance all OK. But after applying "Grow Algorithm" all works until close project. After that error file opening.

Design 1.zip

Hello VFO,

I was able to replicate it. Thanks.

I will report the error to the software group so it can be fixed. I am not sure if a work-around can be found on this one. I will inquire.

Edit:

Actually, right after I posted this I thought of the obvious work-around. Just duplicate the cell and do not grow it. Growing it is the issue. This uses a few more instructions but not too bad. This should get you up and going so you can continue. This is what I did:

This reminds me of the old joke: Doctor, it hurts when I do this! The doctor replies, then don't do that! :)

I will report the error to the team to get this fixed. Sorry for the inconvenience.

Dave T

I did it without growing already. But... really it uses more instructions and not enough place for my whole project. My workaround is to use this filter in last step, when all other features of the project working.
This is something in GUI because exported files working fine in real DSP.