When I try to build an application for OS X, the Build button is greyed out when I select x86 64-bit as the Architecture.
What could cause this and what is the solution?
As a bit more background, I'm updating an app I developed in 2014 to make it compatible with Mac OS X Catalina's 64-bit requirement. I have a current Xojo developer license for OS X, but am using Xojo 2016r1 as a short term fix because it offers the 64-bit Mac Build feature I need while still allowing the graphics code I used, which was later deprecated in Xojo 2018r3 (https://blog.xojo.com/2018/12/06/updating-code-that-used-the-graphics-property/ ).
Any advice/solutions is greatly appreciated.