@lestercavey said:
Also, Sketchup.send_action(21112) does not work for me. Even though send_action returns true, no Import Window appears.
Because the API Dictionary is way out of date, and that list of integers is erroneous.
The proper integer (PC only,) to invoke the "File > &Import..." is 21933
I do not know if there is a cross-platform string arg.