Electric_lighting_view sample running error

AbrahamYezioro · January 23, 2026, 8:08am

Hi,
Just updated to the latest version with the Pollination installer [1.66.11.0]. Noticed there is a new option for electric lighting simulations.
Great news and thanks for this new feature!!!

Started trying the sample 'electric_lighting_view". Unfortunately it gives the following error:

Solution exception:
The recipe failed to run with the following error(s):

2026-01-23 10:01:25 ERROR: “CreateRadFolder” failed. See below for more information:
FileNotFoundError: [Errno 2] No such file or directory: ‘model/ies\IESNA:LM-63-2002\r\n[TEST] Sample\r\n[LUMINAIRE] SampleLuminaire\r\n[LAMPCAT] LED 10W\r\n[LAMP] 1000 lm,10 W\r\nTILT=NONE\r\n1 1000 1.0 73 1 1 2 -1.000 0.000 0.000\r\n1.0 1.0 10\r\n 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0 27.5 30.0\r\n 32.5 35.0 37.5 40.0 42.5 45.0 47.5 50.0 52.5 55.0 57.5 60.0 62.5\r\n 65.0 67.5 70.0 72.5 75.0 77.5 80.0 82.5 85.0 87.5 90.0 92.5 95.0\r\n 97.5 100.0 102.5 105.0 107.5 110.0 112.5 115.0 117.5 120.0 122.5 125.0 127.5\r\n 130.0 132.5 135.0 137.5 140.0 142.5 145.0 147.5 150.0 152.5 155.0 157.5 160.0\r\n 162.5 165.0 167.5 170.0 172.5 175.0 177.5 180.0\r\n 0.0\r\n 10000.0 9981.4 9937.1 9847.4 9761.3 9640.4 9507.1 9350.1\r\n 9171.9 8977.7 8763.1 8537.2 8288.5 8021.1 7741.1 7447.4\r\n 7131.0 6806.5 6463.2 6106.3 5736.0 5356.5 4964.7 4562.0\r\n 4149.2 3729.3 3304.3 2878.2 2454.2 2032.0 1614.5 1208.8\r\n 823.2 483.4 232.4 84.4 23.2 10.5 8.8 7.6\r\n 7.0 6.5 6.0 5.4 4.9 4.4 3.5 3.0\r\n 2.5 1.9 1.4 1.1 1.1 1.1 2.8 3.5\r\n 1.4 0.5 0.4 0.4 0.4 0.4 0.4 0.4\r\n 0.4 0.4 0.0 0.0 0.0 0.0 0.0 0.0\r\n 0.ies’

Execution Summary
Scheduled 11 tasks of which:

2 ran successfully:

1 AdjustSky(…)

1 GenerateSky(…)

1 failed:

1 CreateRadFolder(…)

8 were left pending, among these:

1 were missing external dependencies:

1 PrepareFolderPointInTimeView(…)

2 had failed dependencies:

1 CreateOctree(…)

1 _PointInTimeViewPrepareFolder_8480f42eOrchestrator(…)

4 had missing dependencies:

1 ComputeViewSplitCount(…)

1 LetPointInTimeViewFly(…)

1 PointInTimeViewRayTracing(…)

1 _Main_8480f42eOrchestrator(…)

1 was not granted run permission by the scheduler:

1 PrepareFolderPointInTimeView(…)

This progress looks because there were failed tasks

I assume @mikkel is the address for this one. Hope you can help.
Thanks,
-A.

minggangyin · January 23, 2026, 8:47am

You can try to sync the grasshopper file

mikkel · January 23, 2026, 9:43am

Hi @AbrahamYezioro,

I just pushed a fix, so give it 30 minutes to an hour and you should be able to get the fix with LB Versioner. There was a bug that set the identifier to the whole file contents if the Luminaire was created from the string contents (as in the sample) rather than the IES file.

In the meantime you can run the sample by giving the Luminaire a _name_, or alternatively you can run the sample by using an IES file, which I would always recommend. The sample uses a string in a panel, which makes it easier to share a sample file that you can run straight out of the box.

Asisnath · January 23, 2026, 1:27pm

Hi @mikkel After updating now, the visualise luminaire component shows red. I tried replacing the component but still shows red. The sample file runs without error though.

mikkel · January 23, 2026, 1:41pm

Hi @Asisnath,

Did you change the _ies input or are you using the sample? If you changed it, please share the _ies input. If you did not, please share the error message from the component.

Asisnath · January 23, 2026, 1:48pm

I have not added the ies file. Its the same sample file. Here is the error.

If I directly use the sample file from github sample without updating it, that component works

mikkel · January 23, 2026, 2:00pm

Thank you. The import error is because you are missing the newly added function, luminaire_objects, which was added to ladybug-rhino two days ago. Maybe you need to run another update.

The sample file is using the old version of the component. Everything is now moved into the function in ladybug-rhino. I will update the sample on GitHub, but you can use the old component until you have the latest ladybug-rhino – the code is the same.

AbrahamYezioro · January 23, 2026, 2:41pm

Thanks @mikkel ,
Running fine now.
Thanks again for this new feature addition to the LBT workflows.
-A.

Ortemk · January 23, 2026, 7:59pm

Hi!
I have a similar problem. What could be wrong?

mikkel · January 26, 2026, 2:19pm

Hi @Ortemk,

Looks like you do not have the latest version in your core libraries. Did you try to run the update with LB Versioner? You may have to update twice, i.e., run the update, close and reopen Rhino, run the update again, and finally close and reopen Rhino.

Ortemk · January 26, 2026, 3:03pm

Hi.
Yes, I’ve tried it several times. It doesn’t work unfortunately.

Update: I’ve tried to install Pollination instead and it worked for me (in case if smb would have the same issue)

Ortemk · January 27, 2026, 8:54am

Well… Now I have the same problem as the author of the topic.

Ortemk · January 27, 2026, 9:05am

Ok. For a Fix you just have to assign a Name for luminaire. Works fine now i guess.

mikkel · January 27, 2026, 11:11am

Hi @Ortemk,

Are you able to share the IES file? The default name is created from the file or file contents, so I would be interested in seeing why it failed.

Ortemk · January 27, 2026, 12:06pm

3428 lm 42 W.zip (2.6 KB)
I’ve used this one