[Bug]: Turning TDR on/off causes this weird error message

[abooda1981]

Bug description

I get the above error message when I turn TDR off in the genxsettings file. Everything seems to run when I turn the TDR back to off. I can guess about what it means but it's really hard to trace it to a specific input file, especially when turning TDR on/off seems to change it. This is happening with two separate models which are more or less similar, but one has more VREs than the other.

Environment and Version

Ubuntu 24.04, Julia 1.8.1, Main branch.

Relevant error messages

Please see the image below.

![image](https://github.com/user-attachments/assets/4eec927a-cef4-4249-be1e-49cc2aed2086)

Additional context

No response

[lbonaldo]

Hello @abooda1981,
Thank you for opening this issue. Based on the stack trace and log, it seems there might be an issue with the demand_data you’re trying to load.
One potential solution is to delete the TDR_results folder (or rename it if you want to keep a backup) and re-run the TDR by setting TimeDomainReduction: 1 in the genx_settings.yml. The code skips the TDR run if the TimeDomainReductionFolder folder is already present, so this approach ensures you’ll generate a "clean" version of the clustered data.
Let me know if this resolves the error or if further investigation is needed.