Not sure what is causing it but there's definitely something going on with the functionality of the program after it's been opened for an hour or more (random time, but reproduced every time I've used it so far for a long length of time).

1. Copy/Pasting stops functioning. If I copy something it won't paste (maybe it's there though, see my other post in suggestions), nothing shows up on the screen. I go back to copy it again and the copy doesn't work either at this point, right clicking to choose copy on menu and the copy is greyed out.

2. Program starts taking to long to update visually with the little animated icon (on Mac it's the little spinning color wheel) showing up after every single edit.

The copy/paste thing has happened each time (100% reproducible, just the amount of time it takes to happen varies on it). The "thinking" between each update has not happened a lot, but enough that I figure I'll bring it up.

Checked to be sure nothing else was running on my computer that might be slowing things down. Time Machine is turned off. No scanners are even installed on the Mac part of my machine (windows boot has some but nothing that runs automatically).

I can say that restarting the program does fix this 100% of the time as well, of course it happens again in an hour or more, but it does fix it so it's doable for now.

Platform: Mac OS Yosemite 10.10.2
Processor: 3.1 GHz Intel Core i7
Memory: 16 GB 1600 MHz DDR3
Graphics: Nvidia GeForce GT 750M 1024 MB

This has happened to me as well. The only fix is to do as Jo Ann has stated to save and restart the application.

I find it happens when you use the CTRL + D to duplicate. I can get it to happen quite often especially if you mix Ctrl +D with Ctrl + Z to undo.

Just an FYI, this issue should be fixed in v2.0. Currently it is only isolated to systems that have the account user name of Jo or Steve.

Now that's catering to your customers.

yaaaay one more thing that's not just me! haha. Thanks Scott

Wondering why Scott always has a go at Jo Ann...?