Ok, well I just uninstalled 2019 sp4 and installed 2020 pr1. We will see if there are any issues.

I have the same arrow problem on mcamfsw. I've found if I put another machine group after the one I'm working on, it always shows the arrow above it.

Can I install Solidworks 2020 PR1? Will mastercam for Solidworks function within it?

I thought it was 12%. We paid for 3 years maintenance to lock in the old cost.

I use mcam4sw about 95% of the time now. One thing I miss from standalone is "toolpath editor" which allows you to modify feedrates on individual lines of path. I don't know why this functionality isn't there. Maybe it was missed. The main reason I use mcamfsw almost exclusively is the cad creation and modification. A lot of times I'll make solid bodies from each op, all nested in the same file. This gives me the ability to pull measurements from each body per each op. Assemblies are also nice. I'm running a 5 axis now and I like to keep various common workholding setups in an assembly that i can just mate my part in. I used to like drawing in mastercam until I started making a lot of fixtures with unknown dimensions. If i wasn't sure exactly what I needed to make, it could develop as I go in Solidworks. Modification of geometry and solid models in more cumbersome in standalone. Either way, both have their place. If you have Solidworks, and standalone mastercam, you should be able to download mcamfsw and at least try it out.