1. Mention the exact version of MapForge where the bug was found (e.g. v1.0.2).
2. Mention your operating system, with details (e.g. Windows 10 Pro 64-bit, Windows 7 32-bit, Mac OS High Sierra)
3. If it's a script error, first confirm that the bug occurs without other Add-Ons enabled. Many people are getting script errors because they failed to install the re-released Rock Temple Add-On.
4. Some functions in the program can be accessed in several ways (e.g. a menu command, a hotkey, a toolbar button). Be sure to mention which method you used, since a bug might only be affecting one particular method (as recently happened with the "File>Export" command).
5. The more details you can provide, the better. Bugs that can be easily reproduced following a sequence of steps tend to be easy bugs to fix. It's often a good idea to mention which tool you were using when the problem occurred (where applicable, of course).
6. Please try to stick to one bug or issue per post/thread.