everything solved, in fact finally now appeared solidworks launcher as an option for 'open with:' on the computer that had this problem I couldn't find this file, even doing research. mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries mysteries myster mysteries mysteries mysteries myster myster mysteries mysteries mysteries mysteries mysteries mysteries myster mysteries myster myster myster myster myster myster myster myster mysteries myster mysteries mysteries mysteries mysteries myster myster mysteries myster mysteries myster myster mysteries myster myster myster myster myster myster myster myster myster myster myster myster myster myster mysteries myster myster mysteries mysteries myster mysteries myster mysteries mysteries mysteries mysteries myster myster mysteries mysteries myster mysteries mysteries myster mysteries myster myster myster myster
everything solved, it was enough to set a file by type (part, together, drawing) and now it is back to 'normality'.
Thank you.