Hi! I'm noticing that the extensions abort without doing anything or a popup message with the error when there are many selected elements (more than 2000). I'm testing with this code

elements = self.svg.selection
inkex.utils.debug(len(elements))

and the extension just closes and doesn't do anthing. 

There is a way to overcome this?

I usually use inkex.errormsg("text") 

however, it does corrupt if it has to output huge amounts of text.

As a workaround I use something like this:

os_tempdir = tempfile.gettempdir()

def write_debug_file(data, filename):

    debug_temp_filepath = os.path.join(os_tempdir, filename)

    with open(debug_temp_filepath, mode='a', encoding='utf-8') as file:
        file.write(str(data))
        file.close()

inklinea

I usually use inkex.errormsg("text")

Thank you for the feedback, nevertheless this was an example of the Software crashing with too much path objects, more than 2000, doing a simple function.  There is something I'm doing wrong? or there is a limit of number of selected objects to run an extension?