I am just the worker. That is the way the owner likes doing things, so i do as told. I am a 1 man operation running all of our CNC machines plus programming. I am not just a programmer that sits in front of the computer all day. We pay for maintenance so when we get stuck in a bind then i can reach out for help. I have been here for 5+ years and have only had to reach out twice. When i started i did not even know what Mastercam was or what a CNC machine was. Im literally self taught on everything and i normally figure the problems out on my own. Its just frustrating that all of sudden now this "bug" has started affecting our programs. But thank you for your input on things.

Mastercam support emailed me back this morning and said that: this was a known bug that was fixed in versions after 2020 logged as D-34427. They want me to start using a newer Mastercam which honestly I dont feel like messing with at this point. Its wild that it just now all of sudden started happening though. Super weird but if in the end if I have to go to a newer Mastercam I will.

Update already. Just opened the file in Mastercam 2023 and went to do a new stock model and the same thing happened... Stuck on what to do now.

Been using Mastercam 2020 for years now with no hiccup until recently. Last week I noticed it starting acting funny and would pop up the message of "the parameter is incorrect" when attempting to regen a toolpath. When opening the same exact file in a newer Mastercam, it regens it with no problem. Today i did a clean uninstall of Mastercam 2020 and re installed it. It was working fine until just now where it started acting dumb again with the same message. Once that message pops up and i exit out of it, Mastercam pops up another message of "You cannot close the application while a task is active: Mastercam::OMregenDirtyOperations" I could just move onto a newer Mastercam, but our machines run fine with the 2020 Version and every time we upgrade and make a new program something is always out of wack and could potentially harm the machines. I have emailed Mastercam Tech Support but have not heard anything back from them yet. Also this is happening on multiple different files, not just 1. Any help would be greatly appreciated. Thank you!