private static ArrayList<String> addPayloadError(ArrayList<String> errList,
			InjectPayload payload) {
		if (payload.isErrorPlaceholder()) {
			if (errList == null) {
				errList = new ArrayList<>();
			}
			else if (errList.size() > 4) {		// Only accumulate up to 5
				errList.add("...");
				return errList;
			}
			String message;
			if (payload instanceof InjectPayloadCallfixup) {
				message = "callfixup: " + payload.getName();
			}
			else {
				message = "callotherfixup: " + payload.getName();
			}
			errList.add(message);
		}
		return errList;
	}
Add a new InjectPayload to the list of extensions with errors

@param errList is the list of errors
@param payload is the InjectPayload with errors
@return the updated list
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/ProgramCompilerSpec.java