Passing an invalid numeric value to CoreGraphics

[sveinbjornt]

I'm getting lots of the following errors at runtime while using the extended color well. Running OS X 10.11.3:

: Error: this application, or a library it uses, has passed an invalid numeric value (NaN, or not-a-number) to CoreGraphics API and this value is being ignored.Please fix this problem.

[OskarGroth]

Coming from BFPopoverColorWell.m:

[self.popover showRelativeToRect:self.frame ofView:self.superview preferredEdge:self.preferredEdgeForPopover];

See: http://stackoverflow.com/questions/19187344/how-to-detect-where-nan-is-passing-to-coregraphics-api-on-mac-os-x-10-9

It's caused by the implementation of using a singleton Popover.
Correct implementation is to create a new Popover upon access.

[OskarGroth]

Tried to fix this but gave up. This project is too bloated (and seems abandoned anyway).
So I created my own lightweight NSPopover Color Picker in Swift 3.

https://github.com/OskarGroth/ColorPickerPopover

It might suit your needs.