Problem w/ Custom Controls

[scott.klein]

I am having difficulty getting my custom controls to work after both a designer upgrade (to latest) and eclipse upgrade (3.1.1).

In the designer preferences it shows all my custom controls, but I get ClassNotFoundExceptions in the log when I try to open them in designer. Also, when I try to add a custom composite/control to a new composite in designer mode I get the following:

java.lang.UnsupportedClassVersionError: com/ghd/clinical/controls/intellitext/IntelliTextClearButton (Unsupported major.minor version 49.0)

What is the cause of this?

[scott.klein]

Designer 4.2.1 11/14/2005

Eclipse Version: 3.1.1
Build id: M20050929-0840

JRE 1.5 - we also recently moved up to this

[scott.klein]

Revelead that this is a JRE issue having to do with loading classes not compiled with the 1.5 JRE

I couldn't find any specifics on whether Designer is good for 1.5 or not.

[scott.klein]

All of our projects use JRE 1.5. I have cleaned and re-built all of the projects, still get the same error.

[scott.klein]

needed to change my system JRE. This wasn't a designer problem, just stupid old me...per usual

[Eric Clayberg]

Designer will work fine with either JDK 1.4 or 1.5.