My web project that runs fine in RS 2012r2.1, gives a Runtime Error in 2019r1 (as well as in 2017r2):
Assertion failed: (*ptr != '\n' && *ptr != '\r', "Renderer is trying to add multiple lines at once"), function CompilationUnitAddLine, file Common/SpawnCompiler/SpawnCompilerInterface.cpp, line 783.
And when I try to report the error on the next launch of the IDE, i.e. where it says "This application encountered a problem the last time you ran it.", clicking "Report Now" just leads to another "This application has encountered a fatal problem and must be shut down." error msg, and when clicking "Report Now" on that, it says: "An exception of class IOException was not handled. The application must shut down.". So, I cannot even report the error using Feedback. Launching Feedback.app manually does not show any prepared error for reporting, either.
I found a crash report, and that shows that Xojo used up 4.3 GB of memory. That's quite high, IMO. My project isn't that large. It has just two web page, and less than a 100 classes. And it builds fine (and within a few seconds) in 2012r2.1
Has anyone else seen this specific error and knows a solution?
Report is here: Feedback Case #55655