Hi,
can you please update plugin to work with Blender 3.4 and newer? Blender recently removed use_customdata_edge_bevel
Here is more information about Python breaking changes in 3.4:
https://wiki.blender.org/wiki/Reference/Release_Notes/3.4/Python_API

Python: Traceback (most recent call last):
File "C:\Users\shugo\AppData\Roaming\Blender Foundation\Blender\3.5\scripts\addons\io_scene_importldraw\importldraw.py", line 391, in execute
loadldraw.loadFromFile(self, self.filepath)
File "C:\Users\shugo\AppData\Roaming\Blender Foundation\Blender\3.5\scripts\addons\io_scene_importldraw\loadldraw\loadldraw.py", line 4300, in loadFromFile
rootOb = createBlenderObjectsFromNode(node, node.matrix, name)
File "C:\Users\shugo\AppData\Roaming\Blender Foundation\Blender\3.5\scripts\addons\io_scene_importldraw\loadldraw\loadldraw.py", line 3579, in createBlenderObjectsFromNode
ob.data.use_customdata_edge_bevel = True
AttributeError: 'Mesh' object has no attribute 'use_customdata_edge_bevel'
bpy.ops.import_scene.importldraw(filepath="D:\io\Wietse Bricks\WBCorvetteMOC - Copy.ldr", ldrawPath="D:\Blender Versions\ldraw3\", bevelEdges=True)