Have you seen the new Error List in NAV 2009 SP1?
When you know compile objects – errors are shown in an Error List Window.
The Error List Window contains the following fields:
- Error No.
- Object Type
- Object ID
- Object Name
- Error Type (Error, Warnings)
- Function/Trigger
- Line No.
- Description
Which means, that you now know exactly what the error is and where to find it 
Also there is a Design button – when you push this, you are able to edit the C/AL code directly from the Error List Window.
This is a really nice feature!
The following types of errors and warnings are displayed:
- Unsupported data type warnings for Binary and Dataport types
- Unsupported function calls
Unsupported function calls for reports are not reported in the Error List window.