Scary stuff! Silvering lining is no one was hurt.

I never use Autosave. Sometimes, I might not want to save and close w/o saving then re-open. I save often manually. Faster than 5 minutes or whatever time you set for Autosave. I do use backups, though.

Know what you mean now. Doing a lot of trimming this week (new grill mold for our hood scoop). Super touchy. Driving me a little nuts (not a huge deal but very annoying). It's the new drag selection added that causing the issues for me. Doing everything right, yet it still acts up. It will select the perimeter spline sometimes (when trimming interior patterns). Agree with Jeff, I liked it the old way (2020 and before!)

2 weeks running 2021 and haven't had any of the issues reported here. At times, I've found the selection process when trimming and filleting can be a bit bulky (have to select again when it wouldn't take) but not that big a deal. One thing irks me (not related to this topic): Say, you want to convert solid body(ies) to surfs - no dialog box shows up like in previous versions. I have to triple click a solid to select the body. Sometimes I have to do it more than once to take. In previous versions, all I do is select the solid body icon and it only selects bodies (and not faces, etc.)...or select the 'faces only' icon / button to select faces. The clicking only selection bugs me a bit. I prefer the former described.

Ah. Good idea. Thanks..

(I love the new interface. From day 1 when I first opened 2018...after I explained to my company it was time to upgrade and get back on maintenance. Mastercam investment has repaid itself a thousand fold for us.)

No. Everything was whack. Certain toolpaths were red X'd and could not be regened. Closed program. Opened program. Re-opened file and everything looked and acted normal. Toolpaths not red x'd.

Just installed 2021 last week. Received the Update 1 this morning. Hadn't noticed any trimming or fillet issues. I did some tests just now and everything seems fine. (A different subject) But after Update 1 finished, I opened a grill file I'm machining (now). Toolpaths were red X'd that were fine before. I couldn't regen them! Thought locked? Ghosted? Nope. I got worried...Closed the program....re-opened file and toolpaths all good. Everything now acts normally. (That was weird)

I just opened a SW 2019 file in MC 2020 with no issues. Maybe some setting. Perhaps try something different in Options before opening sldprt in Mastercam?

Config setting also. I elected to add Pan to the right click drop down menu. (I use mouse wheel dynamic rotation constantly) And no, never tried holding shift down and mouse wheel. Nice tip...

Hmmm.. Maybe try Clear All in Model Prep before converting to surfs? You can't just change the colors of selected surfs? Maybe try bringing in a SLDPRT file instead of a Parasolid X_T? With scanned data (large hood scoops) I had trouble with Parasolid X_T. Had to use sldprt file format to successfully import. Normally I can open x_t files, but these scanned files gave me problems.

I like to put in 'untrimmed fillets' to use as a reference and solid extrude the profile (with sharp corners). Do any shaping of solid (like trimming to surfs, etc.), then fillet the solid model (observing the fillet values placed in the original profile).

File merge?

I'd try that and see. Won't hurt. I drip feed our VMC (older fanuc controller) using MachLink DNC software. Program ends in M30 with no issues for me..But, every situation is different.

Is it just my imagination or does turning off shading speed up Stock Model regeneration? Not sure, I swear to calculates a little faster.

^ That's what I got. And yes, changing shading to 0.004". I also do that when opening large files with scanned surfaces. Just the scanned surfaces can cause some problems (minor, though). In addition to loosening my shading chord height to 0.004", for these files (1,000's of tiny scanned surfaces from a hood scoop) - I turn off shading (switch to wireframe) when changing levels to avoid the slight delay "tessellating".

MC won't give this update via the File/Help/Check for Updates. There was an issue with maintenance customers (not sure of the specifics, config files reverting back to default settings, I believe). So, MC disabled it via directly from the software. Log in to the Mastercam website and you will find the update there. Download and install and no more 'color crashes'. I have had zero issues since installing the update, Jeremy.

^ Checked for updates. No new updates at this time...still crashes sometimes. A minor inconvenience. I always save prior to changing colors.. Seems geo is ok, surfs crash. Not always, but at times. Changing surf colors is best for me. Some finishing toolpaths have 12 hour cycle times (manifolds - 78" by 58" by 1" stock). So I change colors for easier selection and split the toolpath in half...for two days machine (I could just use trim toolpath, also).

(I love 2019, Terry. Caught on very quickly and no going back to X. Just work through it - don't X! - and soon it will become second nature to you). But yeah, It was a breeze getting used to for me. I just plowed through when we got the upgrade (started with MC 2018, was using X7 prior). Never (very rarely) opened X7 again. That helped me transition. All the powers and more are there.

Good to hear! I ALWAYS save before changing a surf's color. Sometimes it works like a charm,...sometimes MC crashes.

(I found it - added it to my right click drop down menu).

This really is a great thread to view! So, there isn't a 'regenerate screen' icon or function in any of the menus? I searched everywhere. When I bump up my chord height to view a crisper looking surface it never worked! The view was always the same. I figured I needed to regen screen but couldn't find it for the life of me. So thank you, Rich Thomas! I never knew nor would have known "CTRL SHIFT R" regens screen! Viola! Now surf shading updates to the proper view when changing chord height! A minor inconvenience but it has been bugging me!

Autocurser conf. Right in front of me. Duh. But yes, I needed that for speedy creation of circles all positioned properly for solid cone creations. The part (a tonneau cover for an F150 truck). Then when I trim the solid cones to the solid body (I create a surface from a face for the trimming) the file memory soars higher. Would soon be unmanageable. One row of 11 trimmed solid cones (2 1/2 diameters, 5" ht. before trim) would increase file memory from 4 MB to 11 MB. I trimmed up 11 such rows. So,... after I trim one row of cones - I have to then convert them to surfaces (and set to 'delete solid'). That way the file memory stays low. (Bottom untrimmed faces need to be deleted anyway, so surfs they became). I posted another dumb question on the mastercam forum a couple weeks ago. How do I turn the arc center points off? (looks bad when creating jpeg blueprints). I searched everywhere! In the X series, it was in System conf. CAD settings. Ah. HOME tab center (staring right at me) lol Sometimes the new interface gets me... I didn't even need that question answered as I saw older posts on the same topic...

(it is now) LOL (Thanks, Ron.)

2019 won't let me snap to a quadrant of a circle. Hover pointer over quadrant and nothing. I can get a line to snap to a quadrant but I have to select the quadrant autocurser. In 2018 it works normally for me (quadrant symbol shows up allowing me to snap to it when creating another geo entity). Am I missing something somewhere?