i did not know it, i go to M Space, Select all and everything looks normal, but had some Blocks i could see in Selection Info palette, so try'd that, then Select by Enterty type ( ctrl + t), choose Block insertionm ok out and explode ( alt+shift+e), un/ reselect same way and find 3 Blocks more to explode, after explode save as dwg, make sure the last checkbox in setup was not checked and saved to dwg.
Ooh, I did change name on it first when i download it, maybe that was the culpit as there was () in the filename.
V18, V19, V20, V21, 2015/ 16/ 17/ 18 Pro. Platinum
Deluxe V20, V21, 2015/ 16/ 17
Windows 10 Home Premium 64 bit, 32 GB
NVIDIA Geforce GTX 780m, 1 GB