Issue generating preview from Blender

[JaduBen]

I am trying to generate a preview from Blender, it is outputting the file and I can manually browse to it and open. But the UI just displays "Error loading preview: Parameter is not valid."

[calbzam]

Hi,

Are you using Gluon? Could you attach an screenshot?

Not sure if you can even share a test file so we can try to reproduce the issue.

Regards,

Carlos.

[JaduBen]

I tried both Gluon and full Plastic. I'll attach the preview generating script here. It is a slight modification of a previewing script that ships with Blender but with an added output option so we send it to where plastic expects to find the file. Below are the preview settings.

"<path to blender install>\blender.exe"

-b "@src" --python "<path to python script>\bl_previews_render_plastic.py" -- "@output"

bl_previews_render_plastic.py

 

Also I found this in the logs

DEBUG PreviewRequest - Exception thrown when loading the following preview: <myfile>.blend -> Parameter is not valid.
   at System.Drawing.Bitmap..ctor(String filename)
   at aii.a(String A_0)
   at jl.d(String A_0, Boolean A_1, ach A_2, abz A_3)
   at abu.a(Object A_0)

[Daniel Peñalba]

@JaduBen,

I think that the preview configuration is not correct.

You should setup a script, let's call, for example, "blender_preview.bat", that:

• receives two arguments: the input file and the output file.
• it executes python and pass the python script those parameters.

Then, you should setup the preview something like this:

 

[JaduBen]

The generated command from my current setup works, and the preview file is generated, plastic just wont load the resulting image