Error message "Invalid text height" shows no context, making debugging report very time-consuming.

File:

net/sf/jasperreports/engine/export/JRRtfExporter.java

Around line 720, it says:

throw new JRException("Invalid text height")

For someone trying to resolve this exception, it takes a lot of time to trial-and-error until you have found the element that causes the problem.

Suggested change:

throw new JRException("Invalid text height of text '" + text.getOriginalText() + "' with height " + textHeight + " in element with height " + height)

When you google on "Invalid text height" with JasperReports, you will see more users having problems analyzing this problem. Such as:

http://stackoverflow.com/questions/2576061/rtf-formatting-in-jasper-reports