Error reading CompIce in ActiveFloat IEA 15MW model from Zenodo dataset (OpenFAST v4.2.0)

[JittuVinithaJose]

I am trying to run the IEA 15MW ActiveFloat floating wind turbine model downloaded from the official Zenodo dataset:
https://zenodo.org/records/4322585

I have not modified any files after downloading.

🔧 Environment
OpenFAST version: v4.2.0
OS: Windows (PowerShell)
Files were downloaded directly from Zenodo without modification
The directory structure appears intact
No manual edits were made to .fst or sub-model files
OpenFAST runs normally for other test cases

❓ Question
The simulation fails while reading CompIce with an "Invalid numerical input" error.

Could this be due to:

A version mismatch between the dataset and OpenFAST v4.2.0?
A formatting issue in the CompIce section of the .fst or associated input files?
Missing dependencies or modules required for this configuration?

I would appreciate guidance on whether:

The dataset is compatible with OpenFAST v4.2.0 as-is
Any preprocessing or version-specific adjustments are required
This is a known issue with this ActiveFloat release

🙏 Thanks
Thanks in advance for your help. Please let me know if I should provide additional logs or files.

[jjonkman]

Dear @JittuVinithaJose,

From my quick look at this OpenFAST model, it looks to be quite outdated. As far as I can tell, it is compatible with OpenFAST v2 from 2018: https://github.com/OpenFAST/openfast/releases/tag/v2.0.0.

Best regards,

[JittuVinithaJose]

Dear @JittuVinithaJose,

From my quick look at this OpenFAST model, it looks to be quite outdated. As far as I can tell, it is compatible with OpenFAST v2 from 2018: https://github.com/OpenFAST/openfast/releases/tag/v2.0.0.

Best regards,

Thank you, @jjonkman, for pointing out the outdated version. I used the same version, v2.1, and now the problem is resolved.

But now I have encountered another issue, which shows that-

The file DISCON.dll exists in the servodata, but still it is showing this error. Could you please point me in the right direction?
Thank you for taking the time to review this.

[jjonkman]

Dear @JittuVinithaJose,

Where did you obtain the DISCON.dll file you are using? Is the path to this dll set through ServoDyn input DLL_FileName correct? Is the DISCON.dll file compiled in 64 bits?

Best regards,