Printing the stacktrace of an exception to the log

When you code your error Hooks then you generally don't get the exception stacktrace printed, as you do when the error halts your AL. Here is some handy code to do this yourself:

// Error Hook code - the error Entry will be available
var sw = java.io.StringWriter();
var pw = java.io.PrintWriter(sw);
error.exception.printStackTrace(pw);
pw.close();
task.logmsg("Stacktrace: \n" + sw)

As usual, the secret is in the Java.