Sampler hangs when running example export_all.py

This one should work:

import substance_sampler as ssa
import os
import sys


# Function to export as SBSAR with default options
def export_as_sbsar(asset_to_export, w_res, h_res, destination_path):
    asset_to_export.export(w_resolution=w_res,
                           h_resolution=h_res,
                           path=destination_path)


# Function to export as PNG with Unreal Engine 4 export preset
def export_as_png_with_ue4_preset(asset_to_export, w_res, h_res, destination_path):
    [ue4_export_preset] = ssa.get_export_presets("Unreal Engine 4")
    asset_to_export.export(w_resolution=w_res,
                           h_resolution=h_res,
                           path=destination_path,
                           format=ssa.png,
                           preset=ue4_export_preset)

# Verify if the project is already saved to get its path
if ssa.save_project():
    ssa.save_project()

    # Get the folder path of the project
    export_path = os.path.dirname(ssa.get_project_path())

    # Get all assets of your project in a list
    all_project_assets = ssa.get_project_assets()

    # Go Through the list of all assets
    for asset in all_project_assets:
        # Export each asset with the resolution 2048x2048px next to the project file (.ssa)
        try:
            print(f"Exporting asset {asset} to {export_path} with resolution 1024x1024px as SBSAR...")
            export_as_sbsar(asset, 1024, 1024, export_path)
        except:
            print(f"failed: Exporting asset {asset} to {export_path} with resolution 1024x1024px as SBSAR ")

        # Export each asset with the resolution 2048x2048px in a folder "textures" next to the project file (.ssa)
        try:
            print(f"Exporting asset {asset} to {export_path} with resolution 1024x1024px as PNG with UE4 preset...")
            export_as_png_with_ue4_preset(asset, 1024, 1024, os.path.join(export_path, "textures"))
        except:
            print(f"failed: Exporting asset {asset} to {export_path} with resolution 1024x1024px as PNG with UE4 preset")

else:
    print("Save first your project", file=sys.stderr)

I've found out that the function asset.export, that has been used in the example script, is deprecated. Using asset.export_material, as the error message told me to do, I now get the error "name 'true' is not defined" - although the asset name should be the name by default, and also when I explitely defined "name=asset_to_export.name" in the function when calling asset.export_to_material. I assume that this is a bug.

Oh yes, worth mentioning that the line "if ssa.save_project()" caused Sampler to hang. With it commented out, the script runs without crashing Sampler.

Here's my modified export_all.py script:

import substance_sampler as ssa
import os
# import sys

print("Exporting all assets...")
# Function to export as SBSAR with default options
def export_as_sbsar(asset_to_export, w_res, h_res, destination_path‌‌
    asset_to_export.export_material(name=asset_to_export.name,
                                    w_resolution=w_res,
                                    h_resolution=h_res,
                                    path=destination_path,
                                    subfolder=true,
                                    overwrite=true)


# Function to export as PNG with Unreal Engine 4 export preset
def export_as_png_with_blender_preset(asset_to_export, w_res, h_res, destination_path‌‌
    [blender_preset] = ssa.get_export_presets("Blender Cycles/Eevee")
    asset_to_export.export_material(name=asset_to_export.name,
                                    w_resolution=w_res,
                                    h_resolution=h_res,
                                    path=destination_path,
                                    format=ssa.jpg,
                                    preset=blender_preset,
                                    subfolder=true,
                                    overwrite=true)

# Verify if the project is already saved to get its path
# if ssa.save_project():
# ssa.save_project()
# print("Project saved")

# Get all assets of your project in a list
all_project_assets = ssa.get_project_assets()
print(f"Found {len(all_project_assets)} assets...")

# Get the folder path of the project
export_path = os.path.dirname(ssa.get_project_path())
print(f"Exporting to {export_path}...")

# Go Through the list of all assets
for asset in all_project_assets:
    try:
        print(f"Exporting asset {asset.name} with resolution 1024x1024px as SBSAR...")
        # Export each asset with the resolution 2048x2048px next to the project file (.ssa)
        export_as_sbsar(asset, 1024, 1024, export_path)
    except Exception as e:
        print(f"failed: {e}")

    try:
        print(f"Exporting asset {asset.name} with resolution 1048x1048px as JPG with Blender Cycles/Eevee preset...")
        # Export each asset with the resolution 2048x2048px in a folder "textures" next to the project file (.ssa)
        export_as_png_with_blender_preset(asset, 1048, 1048, os.path.join(export_path, "textures"))
    except Exception as e:
        print(f"failed: {e}")

# else:
#     print("Save first your project") #, file=sys.stderr)