If you have a FUNC without a RETURN, then PropBasic compiler throws a warning (good so far).
But in the new VP, this is treated as a serious error, and so you cannot Run or Load the program to the Prop. Also the status bar shows "compiler error", even though the .spin file is created.
also… not sure where the warnings / errors are displayed now? I can see the .err file created in the program folder… Maybe that’s a work in progress? When I click the status-bar "Failed to compile code for Propbasic" link I see the "Status" window… I guess later the err. info will be displayed there?
(Info: Not sure if you are familiar with PropBasic, but you can save an instruction by NOT using a return statement from a function when the __param1 already contains the value you wish to be returned!)